61980625

素因数分解:

$5^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 91570688

約数和(自身を除く): 29590063

約数列:

[1, 5, 7, 25, 31, 35, 125, 155, 175, 217, 457, 625, 775, 875, 1085, 2285, 3199, 3875, 4375, 5425, 11425, 14167, 15995, 19375, 27125, 57125, 70835, 79975, 99169, 135625, 285625, 354175, 399875, 495845, 1770875, 1999375, 2479225, 8854375, 12396125, 61980625]

約数ペア:

[(1, 61980625), (5, 12396125), (7, 8854375), (25, 2479225), (31, 1999375), (35, 1770875), (125, 495845), (155, 399875), (175, 354175), (217, 285625), (457, 135625), (625, 99169), (775, 79975), (875, 70835), (1085, 57125), (2285, 27125), (3199, 19375), (3875, 15995), (4375, 14167), (5425, 11425)]