20921440525

素因数分解:

$5^2\times {\mathrm{281}}^1\times {\mathrm{647}}^1\times {\mathrm{4603}}^1$

素因数の和:5541

約数の個数: 24

約数和(自身を含む): 26080812864

約数和(自身を除く): 5159372339

約数列:

[1, 5, 25, 281, 647, 1405, 3235, 4603, 7025, 16175, 23015, 115075, 181807, 909035, 1293443, 2978141, 4545175, 6467215, 14890705, 32336075, 74453525, 836857621, 4184288105, 20921440525]

約数ペア:

[(1, 20921440525), (5, 4184288105), (25, 836857621), (281, 74453525), (647, 32336075), (1405, 14890705), (3235, 6467215), (4603, 4545175), (7025, 2978141), (16175, 1293443), (23015, 909035), (115075, 181807)]