20257320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{757}}^1$

素因数の和:994

約数の個数: 64

約数和(自身を含む): 61125120

約数和(自身を除く): 40867800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 223, 446, 669, 757, 892, 1115, 1338, 1514, 1784, 2230, 2271, 2676, 3028, 3345, 3785, 4460, 4542, 5352, 6056, 6690, 7570, 8920, 9084, 11355, 13380, 15140, 18168, 22710, 26760, 30280, 45420, 90840, 168811, 337622, 506433, 675244, 844055, 1012866, 1350488, 1688110, 2025732, 2532165, 3376220, 4051464, 5064330, 6752440, 10128660, 20257320]

約数ペア:

[(1, 20257320), (2, 10128660), (3, 6752440), (4, 5064330), (5, 4051464), (6, 3376220), (8, 2532165), (10, 2025732), (12, 1688110), (15, 1350488), (20, 1012866), (24, 844055), (30, 675244), (40, 506433), (60, 337622), (120, 168811), (223, 90840), (446, 45420), (669, 30280), (757, 26760), (892, 22710), (1115, 18168), (1338, 15140), (1514, 13380), (1784, 11355), (2230, 9084), (2271, 8920), (2676, 7570), (3028, 6690), (3345, 6056), (3785, 5352), (4460, 4542)]