20781617656

素因数分解:

$2^3\times {\mathrm{149}}^1\times {\mathrm{271}}^1\times {\mathrm{64333}}^1$

素因数の和:64759

約数の個数: 32

約数和(自身を含む): 39372408000

約数和(自身を除く): 18590790344

約数列:

[1, 2, 4, 8, 149, 271, 298, 542, 596, 1084, 1192, 2168, 40379, 64333, 80758, 128666, 161516, 257332, 323032, 514664, 9585617, 17434243, 19171234, 34868486, 38342468, 69736972, 76684936, 139473944, 2597702207, 5195404414, 10390808828, 20781617656]

約数ペア:

[(1, 20781617656), (2, 10390808828), (4, 5195404414), (8, 2597702207), (149, 139473944), (271, 76684936), (298, 69736972), (542, 38342468), (596, 34868486), (1084, 19171234), (1192, 17434243), (2168, 9585617), (40379, 514664), (64333, 323032), (80758, 257332), (128666, 161516)]