981253820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{8609}}^1$

素因数の和:8798

約数の個数: 48

約数和(自身を含む): 2126325600

約数和(自身を除く): 1145071780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 139, 164, 205, 278, 410, 556, 695, 820, 1390, 2780, 5699, 8609, 11398, 17218, 22796, 28495, 34436, 43045, 56990, 86090, 113980, 172180, 352969, 705938, 1196651, 1411876, 1764845, 2393302, 3529690, 4786604, 5983255, 7059380, 11966510, 23933020, 49062691, 98125382, 196250764, 245313455, 490626910, 981253820]

約数ペア:

[(1, 981253820), (2, 490626910), (4, 245313455), (5, 196250764), (10, 98125382), (20, 49062691), (41, 23933020), (82, 11966510), (139, 7059380), (164, 5983255), (205, 4786604), (278, 3529690), (410, 2393302), (556, 1764845), (695, 1411876), (820, 1196651), (1390, 705938), (2780, 352969), (5699, 172180), (8609, 113980), (11398, 86090), (17218, 56990), (22796, 43045), (28495, 34436)]