20035960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{439}}^1$

素因数の和:620

約数の個数: 64

約数和(自身を含む): 51955200

約数和(自身を除く): 31919240

約数列:

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

約数ペア:

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