278120840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{224291}}^1$

素因数の和:224333

約数の個数: 32

約数和(自身を含む): 645960960

約数和(自身を除く): 367840120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 224291, 448582, 897164, 1121455, 1794328, 2242910, 4485820, 6953021, 8971640, 13906042, 27812084, 34765105, 55624168, 69530210, 139060420, 278120840]

約数ペア:

[(1, 278120840), (2, 139060420), (4, 69530210), (5, 55624168), (8, 34765105), (10, 27812084), (20, 13906042), (31, 8971640), (40, 6953021), (62, 4485820), (124, 2242910), (155, 1794328), (248, 1121455), (310, 897164), (620, 448582), (1240, 224291)]