208816520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{474583}}^1$

素因数の和:474605

約数の個数: 32

約数和(自身を含む): 512550720

約数和(自身を除く): 303734200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 474583, 949166, 1898332, 2372915, 3796664, 4745830, 5220413, 9491660, 10440826, 18983320, 20881652, 26102065, 41763304, 52204130, 104408260, 208816520]

約数ペア:

[(1, 208816520), (2, 104408260), (4, 52204130), (5, 41763304), (8, 26102065), (10, 20881652), (11, 18983320), (20, 10440826), (22, 9491660), (40, 5220413), (44, 4745830), (55, 3796664), (88, 2372915), (110, 1898332), (220, 949166), (440, 474583)]