20913120

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:174

約数の個数: 192

約数和(自身を含む): 75479040

約数和(自身を除く): 54565920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 47, 48, 54, 60, 72, 80, 90, 94, 96, 103, 108, 120, 135, 141, 144, 160, 180, 188, 206, 216, 235, 240, 270, 282, 288, 309, 360, 376, 412, 423, 432, 470, 480, 515, 540, 564, 618, 705, 720, 752, 824, 846, 864, 927, 940, 1030, 1080, 1128, 1236, 1269, 1410, 1440, 1504, 1545, 1648, 1692, 1854, 1880, 2060, 2115, 2160, 2256, 2472, 2538, 2781, 2820, 3090, 3296, 3384, 3708, 3760, 4120, 4230, 4320, 4512, 4635, 4841, 4944, 5076, 5562, 5640, 6180, 6345, 6768, 7416, 7520, 8240, 8460, 9270, 9682, 9888, 10152, 11124, 11280, 12360, 12690, 13536, 13905, 14523, 14832, 16480, 16920, 18540, 19364, 20304, 22248, 22560, 24205, 24720, 25380, 27810, 29046, 29664, 33840, 37080, 38728, 40608, 43569, 44496, 48410, 49440, 50760, 55620, 58092, 67680, 72615, 74160, 77456, 87138, 88992, 96820, 101520, 111240, 116184, 130707, 145230, 148320, 154912, 174276, 193640, 203040, 217845, 222480, 232368, 261414, 290460, 348552, 387280, 435690, 444960, 464736, 522828, 580920, 653535, 697104, 774560, 871380, 1045656, 1161840, 1307070, 1394208, 1742760, 2091312, 2323680, 2614140, 3485520, 4182624, 5228280, 6971040, 10456560, 20913120]

約数ペア:

[(1, 20913120), (2, 10456560), (3, 6971040), (4, 5228280), (5, 4182624), (6, 3485520), (8, 2614140), (9, 2323680), (10, 2091312), (12, 1742760), (15, 1394208), (16, 1307070), (18, 1161840), (20, 1045656), (24, 871380), (27, 774560), (30, 697104), (32, 653535), (36, 580920), (40, 522828), (45, 464736), (47, 444960), (48, 435690), (54, 387280), (60, 348552), (72, 290460), (80, 261414), (90, 232368), (94, 222480), (96, 217845), (103, 203040), (108, 193640), (120, 174276), (135, 154912), (141, 148320), (144, 145230), (160, 130707), (180, 116184), (188, 111240), (206, 101520), (216, 96820), (235, 88992), (240, 87138), (270, 77456), (282, 74160), (288, 72615), (309, 67680), (360, 58092), (376, 55620), (412, 50760), (423, 49440), (432, 48410), (470, 44496), (480, 43569), (515, 40608), (540, 38728), (564, 37080), (618, 33840), (705, 29664), (720, 29046), (752, 27810), (824, 25380), (846, 24720), (864, 24205), (927, 22560), (940, 22248), (1030, 20304), (1080, 19364), (1128, 18540), (1236, 16920), (1269, 16480), (1410, 14832), (1440, 14523), (1504, 13905), (1545, 13536), (1648, 12690), (1692, 12360), (1854, 11280), (1880, 11124), (2060, 10152), (2115, 9888), (2160, 9682), (2256, 9270), (2472, 8460), (2538, 8240), (2781, 7520), (2820, 7416), (3090, 6768), (3296, 6345), (3384, 6180), (3708, 5640), (3760, 5562), (4120, 5076), (4230, 4944), (4320, 4841), (4512, 4635)]