28975120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8423}}^1$

素因数の和:8479

約数の個数: 40

約数和(自身を含む): 68942016

約数和(自身を除く): 39966896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8423, 16846, 33692, 42115, 67384, 84230, 134768, 168460, 336920, 362189, 673840, 724378, 1448756, 1810945, 2897512, 3621890, 5795024, 7243780, 14487560, 28975120]

約数ペア:

[(1, 28975120), (2, 14487560), (4, 7243780), (5, 5795024), (8, 3621890), (10, 2897512), (16, 1810945), (20, 1448756), (40, 724378), (43, 673840), (80, 362189), (86, 336920), (172, 168460), (215, 134768), (344, 84230), (430, 67384), (688, 42115), (860, 33692), (1720, 16846), (3440, 8423)]