20465625

素因数分解:

$3^1\times 5^5\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:124

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 15157095

約数列:

[1, 3, 5, 15, 25, 37, 59, 75, 111, 125, 177, 185, 295, 375, 555, 625, 885, 925, 1475, 1875, 2183, 2775, 3125, 4425, 4625, 6549, 7375, 9375, 10915, 13875, 22125, 23125, 32745, 36875, 54575, 69375, 110625, 115625, 163725, 184375, 272875, 346875, 553125, 818625, 1364375, 4093125, 6821875, 20465625]

約数ペア:

[(1, 20465625), (3, 6821875), (5, 4093125), (15, 1364375), (25, 818625), (37, 553125), (59, 346875), (75, 272875), (111, 184375), (125, 163725), (177, 115625), (185, 110625), (295, 69375), (375, 54575), (555, 36875), (625, 32745), (885, 23125), (925, 22125), (1475, 13875), (1875, 10915), (2183, 9375), (2775, 7375), (3125, 6549), (4425, 4625)]