388373320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{236813}}^1$

素因数の和:236865

約数の個数: 32

約数和(自身を含む): 895156920

約数和(自身を除く): 506783600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 236813, 473626, 947252, 1184065, 1894504, 2368130, 4736260, 9472520, 9709333, 19418666, 38837332, 48546665, 77674664, 97093330, 194186660, 388373320]

約数ペア:

[(1, 388373320), (2, 194186660), (4, 97093330), (5, 77674664), (8, 48546665), (10, 38837332), (20, 19418666), (40, 9709333), (41, 9472520), (82, 4736260), (164, 2368130), (205, 1894504), (328, 1184065), (410, 947252), (820, 473626), (1640, 236813)]