20487720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 72394560

約数和(自身を除く): 51906840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 17, 20, 22, 24, 30, 33, 34, 40, 44, 51, 55, 60, 66, 68, 83, 85, 88, 102, 110, 120, 121, 132, 136, 165, 166, 170, 187, 204, 220, 242, 249, 255, 264, 330, 332, 340, 363, 374, 408, 415, 440, 484, 498, 510, 561, 605, 660, 664, 680, 726, 748, 830, 913, 935, 968, 996, 1020, 1122, 1210, 1245, 1320, 1411, 1452, 1496, 1660, 1815, 1826, 1870, 1992, 2040, 2057, 2244, 2420, 2490, 2739, 2805, 2822, 2904, 3320, 3630, 3652, 3740, 4114, 4233, 4488, 4565, 4840, 4980, 5478, 5610, 5644, 6171, 7055, 7260, 7304, 7480, 8228, 8466, 9130, 9960, 10043, 10285, 10956, 11220, 11288, 12342, 13695, 14110, 14520, 15521, 16456, 16932, 18260, 20086, 20570, 21165, 21912, 22440, 24684, 27390, 28220, 30129, 30855, 31042, 33864, 36520, 40172, 41140, 42330, 46563, 49368, 50215, 54780, 56440, 60258, 61710, 62084, 77605, 80344, 82280, 84660, 93126, 100430, 109560, 120516, 123420, 124168, 150645, 155210, 169320, 170731, 186252, 200860, 232815, 241032, 246840, 301290, 310420, 341462, 372504, 401720, 465630, 512193, 602580, 620840, 682924, 853655, 931260, 1024386, 1205160, 1365848, 1707310, 1862520, 2048772, 2560965, 3414620, 4097544, 5121930, 6829240, 10243860, 20487720]

約数ペア:

[(1, 20487720), (2, 10243860), (3, 6829240), (4, 5121930), (5, 4097544), (6, 3414620), (8, 2560965), (10, 2048772), (11, 1862520), (12, 1707310), (15, 1365848), (17, 1205160), (20, 1024386), (22, 931260), (24, 853655), (30, 682924), (33, 620840), (34, 602580), (40, 512193), (44, 465630), (51, 401720), (55, 372504), (60, 341462), (66, 310420), (68, 301290), (83, 246840), (85, 241032), (88, 232815), (102, 200860), (110, 186252), (120, 170731), (121, 169320), (132, 155210), (136, 150645), (165, 124168), (166, 123420), (170, 120516), (187, 109560), (204, 100430), (220, 93126), (242, 84660), (249, 82280), (255, 80344), (264, 77605), (330, 62084), (332, 61710), (340, 60258), (363, 56440), (374, 54780), (408, 50215), (415, 49368), (440, 46563), (484, 42330), (498, 41140), (510, 40172), (561, 36520), (605, 33864), (660, 31042), (664, 30855), (680, 30129), (726, 28220), (748, 27390), (830, 24684), (913, 22440), (935, 21912), (968, 21165), (996, 20570), (1020, 20086), (1122, 18260), (1210, 16932), (1245, 16456), (1320, 15521), (1411, 14520), (1452, 14110), (1496, 13695), (1660, 12342), (1815, 11288), (1826, 11220), (1870, 10956), (1992, 10285), (2040, 10043), (2057, 9960), (2244, 9130), (2420, 8466), (2490, 8228), (2739, 7480), (2805, 7304), (2822, 7260), (2904, 7055), (3320, 6171), (3630, 5644), (3652, 5610), (3740, 5478), (4114, 4980), (4233, 4840), (4488, 4565)]