18778890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{269}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 30209910

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 179, 195, 269, 358, 390, 537, 538, 807, 895, 1074, 1345, 1614, 1790, 2327, 2685, 2690, 3497, 4035, 4654, 5370, 6981, 6994, 8070, 10491, 11635, 13962, 17485, 20982, 23270, 34905, 34970, 48151, 52455, 69810, 96302, 104910, 144453, 240755, 288906, 481510, 625963, 722265, 1251926, 1444530, 1877889, 3129815, 3755778, 6259630, 9389445, 18778890]

約数ペア:

[(1, 18778890), (2, 9389445), (3, 6259630), (5, 3755778), (6, 3129815), (10, 1877889), (13, 1444530), (15, 1251926), (26, 722265), (30, 625963), (39, 481510), (65, 288906), (78, 240755), (130, 144453), (179, 104910), (195, 96302), (269, 69810), (358, 52455), (390, 48151), (537, 34970), (538, 34905), (807, 23270), (895, 20982), (1074, 17485), (1345, 13962), (1614, 11635), (1790, 10491), (2327, 8070), (2685, 6994), (2690, 6981), (3497, 5370), (4035, 4654)]