40071920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{439}}^1$

素因数の和:622

約数の個数: 80

約数和(自身を含む): 107374080

約数和(自身を除く): 67302160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 280, 326, 439, 560, 652, 815, 878, 1141, 1304, 1630, 1756, 2195, 2282, 2608, 3073, 3260, 3512, 4390, 4564, 5705, 6146, 6520, 7024, 8780, 9128, 11410, 12292, 13040, 15365, 17560, 18256, 22820, 24584, 30730, 35120, 45640, 49168, 61460, 71557, 91280, 122920, 143114, 245840, 286228, 357785, 500899, 572456, 715570, 1001798, 1144912, 1431140, 2003596, 2504495, 2862280, 4007192, 5008990, 5724560, 8014384, 10017980, 20035960, 40071920]

約数ペア:

[(1, 40071920), (2, 20035960), (4, 10017980), (5, 8014384), (7, 5724560), (8, 5008990), (10, 4007192), (14, 2862280), (16, 2504495), (20, 2003596), (28, 1431140), (35, 1144912), (40, 1001798), (56, 715570), (70, 572456), (80, 500899), (112, 357785), (140, 286228), (163, 245840), (280, 143114), (326, 122920), (439, 91280), (560, 71557), (652, 61460), (815, 49168), (878, 45640), (1141, 35120), (1304, 30730), (1630, 24584), (1756, 22820), (2195, 18256), (2282, 17560), (2608, 15365), (3073, 13040), (3260, 12292), (3512, 11410), (4390, 9128), (4564, 8780), (5705, 7024), (6146, 6520)]