20857560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2381}}^1$

素因数の和:2468

約数の個数: 64

約数和(自身を含む): 63456480

約数和(自身を除く): 42598920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 73, 120, 146, 219, 292, 365, 438, 584, 730, 876, 1095, 1460, 1752, 2190, 2381, 2920, 4380, 4762, 7143, 8760, 9524, 11905, 14286, 19048, 23810, 28572, 35715, 47620, 57144, 71430, 95240, 142860, 173813, 285720, 347626, 521439, 695252, 869065, 1042878, 1390504, 1738130, 2085756, 2607195, 3476260, 4171512, 5214390, 6952520, 10428780, 20857560]

約数ペア:

[(1, 20857560), (2, 10428780), (3, 6952520), (4, 5214390), (5, 4171512), (6, 3476260), (8, 2607195), (10, 2085756), (12, 1738130), (15, 1390504), (20, 1042878), (24, 869065), (30, 695252), (40, 521439), (60, 347626), (73, 285720), (120, 173813), (146, 142860), (219, 95240), (292, 71430), (365, 57144), (438, 47620), (584, 35715), (730, 28572), (876, 23810), (1095, 19048), (1460, 14286), (1752, 11905), (2190, 9524), (2381, 8760), (2920, 7143), (4380, 4762)]