20512281625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{210113}}^1$

素因数の和:210210

約数の個数: 32

約数和(自身を含む): 28320005376

約数和(自身を除く): 7807723751

約数列:

[1, 5, 11, 25, 55, 71, 125, 275, 355, 781, 1375, 1775, 3905, 8875, 19525, 97625, 210113, 1050565, 2311243, 5252825, 11556215, 14918023, 26264125, 57781075, 74590115, 164098253, 288905375, 372950575, 820491265, 1864752875, 4102456325, 20512281625]

約数ペア:

[(1, 20512281625), (5, 4102456325), (11, 1864752875), (25, 820491265), (55, 372950575), (71, 288905375), (125, 164098253), (275, 74590115), (355, 57781075), (781, 26264125), (1375, 14918023), (1775, 11556215), (3905, 5252825), (8875, 2311243), (19525, 1050565), (97625, 210113)]