20273940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{691}}^1$

素因数の和:869

約数の個数: 72

約数和(自身を含む): 61964448

約数和(自身を除く): 41690508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 691, 815, 978, 1382, 1467, 1630, 1956, 2073, 2445, 2764, 2934, 3260, 3455, 4146, 4890, 5868, 6219, 6910, 7335, 8292, 9780, 10365, 12438, 13820, 14670, 20730, 24876, 29340, 31095, 41460, 62190, 112633, 124380, 225266, 337899, 450532, 563165, 675798, 1013697, 1126330, 1351596, 1689495, 2027394, 2252660, 3378990, 4054788, 5068485, 6757980, 10136970, 20273940]

約数ペア:

[(1, 20273940), (2, 10136970), (3, 6757980), (4, 5068485), (5, 4054788), (6, 3378990), (9, 2252660), (10, 2027394), (12, 1689495), (15, 1351596), (18, 1126330), (20, 1013697), (30, 675798), (36, 563165), (45, 450532), (60, 337899), (90, 225266), (163, 124380), (180, 112633), (326, 62190), (489, 41460), (652, 31095), (691, 29340), (815, 24876), (978, 20730), (1382, 14670), (1467, 13820), (1630, 12438), (1956, 10365), (2073, 9780), (2445, 8292), (2764, 7335), (2934, 6910), (3260, 6219), (3455, 5868), (4146, 4890)]