20905950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 56996352

約数和(自身を除く): 36090402

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 71, 75, 78, 130, 142, 150, 151, 195, 213, 302, 325, 355, 390, 426, 453, 650, 710, 755, 906, 923, 975, 1065, 1510, 1775, 1846, 1950, 1963, 2130, 2265, 2769, 3550, 3775, 3926, 4530, 4615, 5325, 5538, 5889, 7550, 9230, 9815, 10650, 10721, 11325, 11778, 13845, 19630, 21442, 22650, 23075, 27690, 29445, 32163, 46150, 49075, 53605, 58890, 64326, 69225, 98150, 107210, 138450, 139373, 147225, 160815, 268025, 278746, 294450, 321630, 418119, 536050, 696865, 804075, 836238, 1393730, 1608150, 2090595, 3484325, 4181190, 6968650, 10452975, 20905950]

約数ペア:

[(1, 20905950), (2, 10452975), (3, 6968650), (5, 4181190), (6, 3484325), (10, 2090595), (13, 1608150), (15, 1393730), (25, 836238), (26, 804075), (30, 696865), (39, 536050), (50, 418119), (65, 321630), (71, 294450), (75, 278746), (78, 268025), (130, 160815), (142, 147225), (150, 139373), (151, 138450), (195, 107210), (213, 98150), (302, 69225), (325, 64326), (355, 58890), (390, 53605), (426, 49075), (453, 46150), (650, 32163), (710, 29445), (755, 27690), (906, 23075), (923, 22650), (975, 21442), (1065, 19630), (1510, 13845), (1775, 11778), (1846, 11325), (1950, 10721), (1963, 10650), (2130, 9815), (2265, 9230), (2769, 7550), (3550, 5889), (3775, 5538), (3926, 5325), (4530, 4615)]