289317320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{176413}}^1$

素因数の和:176465

約数の個数: 32

約数和(自身を含む): 666844920

約数和(自身を除く): 377527600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 176413, 352826, 705652, 882065, 1411304, 1764130, 3528260, 7056520, 7232933, 14465866, 28931732, 36164665, 57863464, 72329330, 144658660, 289317320]

約数ペア:

[(1, 289317320), (2, 144658660), (4, 72329330), (5, 57863464), (8, 36164665), (10, 28931732), (20, 14465866), (40, 7232933), (41, 7056520), (82, 3528260), (164, 1764130), (205, 1411304), (328, 882065), (410, 705652), (820, 352826), (1640, 176413)]