20185375

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:121

約数の個数: 64

約数和(自身を含む): 32348160

約数和(自身を除く): 12162785

約数列:

[1, 5, 7, 17, 23, 25, 35, 59, 85, 115, 119, 125, 161, 175, 295, 391, 413, 425, 575, 595, 805, 875, 1003, 1357, 1475, 1955, 2065, 2125, 2737, 2875, 2975, 4025, 5015, 6785, 7021, 7375, 9499, 9775, 10325, 13685, 14875, 20125, 23069, 25075, 33925, 35105, 47495, 48875, 51625, 68425, 115345, 125375, 161483, 169625, 175525, 237475, 342125, 576725, 807415, 877625, 1187375, 2883625, 4037075, 20185375]

約数ペア:

[(1, 20185375), (5, 4037075), (7, 2883625), (17, 1187375), (23, 877625), (25, 807415), (35, 576725), (59, 342125), (85, 237475), (115, 175525), (119, 169625), (125, 161483), (161, 125375), (175, 115345), (295, 68425), (391, 51625), (413, 48875), (425, 47495), (575, 35105), (595, 33925), (805, 25075), (875, 23069), (1003, 20125), (1357, 14875), (1475, 13685), (1955, 10325), (2065, 9775), (2125, 9499), (2737, 7375), (2875, 7021), (2975, 6785), (4025, 5015)]