20918040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:114

約数の個数: 256

約数和(自身を含む): 78382080

約数和(自身を除く): 57464040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 23, 24, 26, 30, 33, 39, 40, 44, 46, 52, 53, 55, 60, 65, 66, 69, 78, 88, 92, 104, 106, 110, 115, 120, 130, 132, 138, 143, 156, 159, 165, 184, 195, 212, 220, 230, 253, 260, 264, 265, 276, 286, 299, 312, 318, 330, 345, 390, 424, 429, 440, 460, 506, 520, 530, 552, 572, 583, 598, 636, 660, 689, 690, 715, 759, 780, 795, 858, 897, 920, 1012, 1060, 1144, 1166, 1196, 1219, 1265, 1272, 1320, 1378, 1380, 1430, 1495, 1518, 1560, 1590, 1716, 1749, 1794, 2024, 2067, 2120, 2145, 2332, 2392, 2438, 2530, 2756, 2760, 2860, 2915, 2990, 3036, 3180, 3289, 3432, 3445, 3498, 3588, 3657, 3795, 4134, 4290, 4485, 4664, 4876, 5060, 5512, 5720, 5830, 5980, 6072, 6095, 6360, 6578, 6890, 6996, 7176, 7314, 7579, 7590, 8268, 8580, 8745, 8970, 9752, 9867, 10120, 10335, 11660, 11960, 12190, 13156, 13409, 13780, 13992, 14628, 15158, 15180, 15847, 16445, 16536, 17160, 17490, 17940, 18285, 19734, 20670, 22737, 23320, 24380, 26312, 26818, 27560, 29256, 30316, 30360, 31694, 32890, 34980, 35880, 36570, 37895, 39468, 40227, 41340, 45474, 47541, 48760, 49335, 53636, 60632, 63388, 65780, 67045, 69960, 73140, 75790, 78936, 79235, 80454, 82680, 90948, 95082, 98670, 107272, 113685, 126776, 131560, 134090, 146280, 151580, 158470, 160908, 174317, 181896, 190164, 197340, 201135, 227370, 237705, 268180, 303160, 316940, 321816, 348634, 380328, 394680, 402270, 454740, 475410, 522951, 536360, 633880, 697268, 804540, 871585, 909480, 950820, 1045902, 1394536, 1609080, 1743170, 1901640, 2091804, 2614755, 3486340, 4183608, 5229510, 6972680, 10459020, 20918040]

約数ペア:

[(1, 20918040), (2, 10459020), (3, 6972680), (4, 5229510), (5, 4183608), (6, 3486340), (8, 2614755), (10, 2091804), (11, 1901640), (12, 1743170), (13, 1609080), (15, 1394536), (20, 1045902), (22, 950820), (23, 909480), (24, 871585), (26, 804540), (30, 697268), (33, 633880), (39, 536360), (40, 522951), (44, 475410), (46, 454740), (52, 402270), (53, 394680), (55, 380328), (60, 348634), (65, 321816), (66, 316940), (69, 303160), (78, 268180), (88, 237705), (92, 227370), (104, 201135), (106, 197340), (110, 190164), (115, 181896), (120, 174317), (130, 160908), (132, 158470), (138, 151580), (143, 146280), (156, 134090), (159, 131560), (165, 126776), (184, 113685), (195, 107272), (212, 98670), (220, 95082), (230, 90948), (253, 82680), (260, 80454), (264, 79235), (265, 78936), (276, 75790), (286, 73140), (299, 69960), (312, 67045), (318, 65780), (330, 63388), (345, 60632), (390, 53636), (424, 49335), (429, 48760), (440, 47541), (460, 45474), (506, 41340), (520, 40227), (530, 39468), (552, 37895), (572, 36570), (583, 35880), (598, 34980), (636, 32890), (660, 31694), (689, 30360), (690, 30316), (715, 29256), (759, 27560), (780, 26818), (795, 26312), (858, 24380), (897, 23320), (920, 22737), (1012, 20670), (1060, 19734), (1144, 18285), (1166, 17940), (1196, 17490), (1219, 17160), (1265, 16536), (1272, 16445), (1320, 15847), (1378, 15180), (1380, 15158), (1430, 14628), (1495, 13992), (1518, 13780), (1560, 13409), (1590, 13156), (1716, 12190), (1749, 11960), (1794, 11660), (2024, 10335), (2067, 10120), (2120, 9867), (2145, 9752), (2332, 8970), (2392, 8745), (2438, 8580), (2530, 8268), (2756, 7590), (2760, 7579), (2860, 7314), (2915, 7176), (2990, 6996), (3036, 6890), (3180, 6578), (3289, 6360), (3432, 6095), (3445, 6072), (3498, 5980), (3588, 5830), (3657, 5720), (3795, 5512), (4134, 5060), (4290, 4876), (4485, 4664)]