21600530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 25919470

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 109, 133, 149, 190, 218, 266, 298, 545, 665, 745, 763, 1043, 1090, 1330, 1490, 1526, 2071, 2086, 2831, 3815, 4142, 5215, 5662, 7630, 10355, 10430, 14155, 14497, 16241, 19817, 20710, 28310, 28994, 32482, 39634, 72485, 81205, 99085, 113687, 144970, 162410, 198170, 227374, 308579, 568435, 617158, 1136870, 1542895, 2160053, 3085790, 4320106, 10800265, 21600530]

約数ペア:

[(1, 21600530), (2, 10800265), (5, 4320106), (7, 3085790), (10, 2160053), (14, 1542895), (19, 1136870), (35, 617158), (38, 568435), (70, 308579), (95, 227374), (109, 198170), (133, 162410), (149, 144970), (190, 113687), (218, 99085), (266, 81205), (298, 72485), (545, 39634), (665, 32482), (745, 28994), (763, 28310), (1043, 20710), (1090, 19817), (1330, 16241), (1490, 14497), (1526, 14155), (2071, 10430), (2086, 10355), (2831, 7630), (3815, 5662), (4142, 5215)]