21370778875

素因数分解:

$5^3\times {\mathrm{4861}}^1\times {\mathrm{35171}}^1$

素因数の和:40047

約数の個数: 16

約数和(自身を含む): 26676977184

約数和(自身を除く): 5306198309

約数列:

[1, 5, 25, 125, 4861, 24305, 35171, 121525, 175855, 607625, 879275, 4396375, 170966231, 854831155, 4274155775, 21370778875]

約数ペア:

[(1, 21370778875), (5, 4274155775), (25, 854831155), (125, 170966231), (4861, 4396375), (24305, 879275), (35171, 607625), (121525, 175855)]