401064820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{2399}}^1$

素因数の和:3064

約数の個数: 48

約数和(自身を含む): 908812800

約数和(自身を除く): 507747980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 643, 1286, 2399, 2572, 3215, 4798, 6430, 8359, 9596, 11995, 12860, 16718, 23990, 31187, 33436, 41795, 47980, 62374, 83590, 124748, 155935, 167180, 311870, 623740, 1542557, 3085114, 6170228, 7712785, 15425570, 20053241, 30851140, 40106482, 80212964, 100266205, 200532410, 401064820]

約数ペア:

[(1, 401064820), (2, 200532410), (4, 100266205), (5, 80212964), (10, 40106482), (13, 30851140), (20, 20053241), (26, 15425570), (52, 7712785), (65, 6170228), (130, 3085114), (260, 1542557), (643, 623740), (1286, 311870), (2399, 167180), (2572, 155935), (3215, 124748), (4798, 83590), (6430, 62374), (8359, 47980), (9596, 41795), (11995, 33436), (12860, 31187), (16718, 23990)]