21028290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16301}}^1$

素因数の和:16354

約数の個数: 32

約数和(自身を含む): 51644736

約数和(自身を除く): 30616446

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16301, 32602, 48903, 81505, 97806, 163010, 244515, 489030, 700943, 1401886, 2102829, 3504715, 4205658, 7009430, 10514145, 21028290]

約数ペア:

[(1, 21028290), (2, 10514145), (3, 7009430), (5, 4205658), (6, 3504715), (10, 2102829), (15, 1401886), (30, 700943), (43, 489030), (86, 244515), (129, 163010), (215, 97806), (258, 81505), (430, 48903), (645, 32602), (1290, 16301)]