20527425

素因数分解:

$3^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 39719680

約数和(自身を除く): 19192255

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 81, 93, 109, 135, 155, 225, 243, 279, 327, 405, 465, 545, 675, 775, 837, 981, 1215, 1395, 1635, 2025, 2325, 2511, 2725, 2943, 3379, 4185, 4905, 6075, 6975, 7533, 8175, 8829, 10137, 12555, 14715, 16895, 20925, 24525, 26487, 30411, 37665, 44145, 50685, 62775, 73575, 84475, 91233, 132435, 152055, 188325, 220725, 253425, 273699, 456165, 662175, 760275, 821097, 1368495, 2280825, 4105485, 6842475, 20527425]

約数ペア:

[(1, 20527425), (3, 6842475), (5, 4105485), (9, 2280825), (15, 1368495), (25, 821097), (27, 760275), (31, 662175), (45, 456165), (75, 273699), (81, 253425), (93, 220725), (109, 188325), (135, 152055), (155, 132435), (225, 91233), (243, 84475), (279, 73575), (327, 62775), (405, 50685), (465, 44145), (545, 37665), (675, 30411), (775, 26487), (837, 24525), (981, 20925), (1215, 16895), (1395, 14715), (1635, 12555), (2025, 10137), (2325, 8829), (2511, 8175), (2725, 7533), (2943, 6975), (3379, 6075), (4185, 4905)]