21821640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4229}}^1$

素因数の和:4286

約数の個数: 64

約数和(自身を含む): 67003200

約数和(自身を除く): 45181560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4229, 5160, 8458, 12687, 16916, 21145, 25374, 33832, 42290, 50748, 63435, 84580, 101496, 126870, 169160, 181847, 253740, 363694, 507480, 545541, 727388, 909235, 1091082, 1454776, 1818470, 2182164, 2727705, 3636940, 4364328, 5455410, 7273880, 10910820, 21821640]

約数ペア:

[(1, 21821640), (2, 10910820), (3, 7273880), (4, 5455410), (5, 4364328), (6, 3636940), (8, 2727705), (10, 2182164), (12, 1818470), (15, 1454776), (20, 1091082), (24, 909235), (30, 727388), (40, 545541), (43, 507480), (60, 363694), (86, 253740), (120, 181847), (129, 169160), (172, 126870), (215, 101496), (258, 84580), (344, 63435), (430, 50748), (516, 42290), (645, 33832), (860, 25374), (1032, 21145), (1290, 16916), (1720, 12687), (2580, 8458), (4229, 5160)]