138728840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{204013}}^1$

素因数の和:204041

約数の個数: 32

約数和(自身を含む): 330502680

約数和(自身を除く): 191773840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 204013, 408026, 816052, 1020065, 1632104, 2040130, 3468221, 4080260, 6936442, 8160520, 13872884, 17341105, 27745768, 34682210, 69364420, 138728840]

約数ペア:

[(1, 138728840), (2, 69364420), (4, 34682210), (5, 27745768), (8, 17341105), (10, 13872884), (17, 8160520), (20, 6936442), (34, 4080260), (40, 3468221), (68, 2040130), (85, 1632104), (136, 1020065), (170, 816052), (340, 408026), (680, 204013)]