21747390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3571}}^1$

素因数の和:3617

約数の個数: 64

約数和(自身を含む): 61724160

約数和(自身を除く): 39976770

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 58, 70, 87, 105, 145, 174, 203, 210, 290, 406, 435, 609, 870, 1015, 1218, 2030, 3045, 3571, 6090, 7142, 10713, 17855, 21426, 24997, 35710, 49994, 53565, 74991, 103559, 107130, 124985, 149982, 207118, 249970, 310677, 374955, 517795, 621354, 724913, 749910, 1035590, 1449826, 1553385, 2174739, 3106770, 3624565, 4349478, 7249130, 10873695, 21747390]

約数ペア:

[(1, 21747390), (2, 10873695), (3, 7249130), (5, 4349478), (6, 3624565), (7, 3106770), (10, 2174739), (14, 1553385), (15, 1449826), (21, 1035590), (29, 749910), (30, 724913), (35, 621354), (42, 517795), (58, 374955), (70, 310677), (87, 249970), (105, 207118), (145, 149982), (174, 124985), (203, 107130), (210, 103559), (290, 74991), (406, 53565), (435, 49994), (609, 35710), (870, 24997), (1015, 21426), (1218, 17855), (2030, 10713), (3045, 7142), (3571, 6090)]