20326875

素因数分解:

$3^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 34901328

約数和(自身を除く): 14574453

約数列:

[1, 3, 5, 15, 25, 37, 75, 111, 125, 185, 293, 375, 555, 625, 879, 925, 1465, 1875, 2775, 4395, 4625, 7325, 10841, 13875, 21975, 23125, 32523, 36625, 54205, 69375, 109875, 162615, 183125, 271025, 549375, 813075, 1355125, 4065375, 6775625, 20326875]

約数ペア:

[(1, 20326875), (3, 6775625), (5, 4065375), (15, 1355125), (25, 813075), (37, 549375), (75, 271025), (111, 183125), (125, 162615), (185, 109875), (293, 69375), (375, 54205), (555, 36625), (625, 32523), (879, 23125), (925, 21975), (1465, 13875), (1875, 10841), (2775, 7325), (4395, 4625)]