138648020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4441}}^1$

素因数の和:4680

約数の個数: 48

約数和(自身を含む): 334322688

約数和(自身を除く): 195674668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4441, 4460, 6244, 7805, 8882, 15610, 17764, 22205, 31087, 31220, 44410, 62174, 88820, 124348, 155435, 310870, 621740, 990343, 1980686, 3961372, 4951715, 6932401, 9903430, 13864802, 19806860, 27729604, 34662005, 69324010, 138648020]

約数ペア:

[(1, 138648020), (2, 69324010), (4, 34662005), (5, 27729604), (7, 19806860), (10, 13864802), (14, 9903430), (20, 6932401), (28, 4951715), (35, 3961372), (70, 1980686), (140, 990343), (223, 621740), (446, 310870), (892, 155435), (1115, 124348), (1561, 88820), (2230, 62174), (3122, 44410), (4441, 31220), (4460, 31087), (6244, 22205), (7805, 17764), (8882, 15610)]