20338980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1319}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 57214080

約数和(自身を除く): 36875100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1319, 1542, 2570, 2638, 3084, 3855, 3957, 5140, 5276, 6595, 7710, 7914, 13190, 15420, 15828, 19785, 26380, 39570, 79140, 338983, 677966, 1016949, 1355932, 1694915, 2033898, 3389830, 4067796, 5084745, 6779660, 10169490, 20338980]

約数ペア:

[(1, 20338980), (2, 10169490), (3, 6779660), (4, 5084745), (5, 4067796), (6, 3389830), (10, 2033898), (12, 1694915), (15, 1355932), (20, 1016949), (30, 677966), (60, 338983), (257, 79140), (514, 39570), (771, 26380), (1028, 19785), (1285, 15828), (1319, 15420), (1542, 13190), (2570, 7914), (2638, 7710), (3084, 6595), (3855, 5276), (3957, 5140)]