278593980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{663319}}^1$

素因数の和:663338

約数の個数: 48

約数和(自身を含む): 891502080

約数和(自身を除く): 612908100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 663319, 1326638, 1989957, 2653276, 3316595, 3979914, 4643233, 6633190, 7959828, 9286466, 9949785, 13266380, 13929699, 18572932, 19899570, 23216165, 27859398, 39799140, 46432330, 55718796, 69648495, 92864660, 139296990, 278593980]

約数ペア:

[(1, 278593980), (2, 139296990), (3, 92864660), (4, 69648495), (5, 55718796), (6, 46432330), (7, 39799140), (10, 27859398), (12, 23216165), (14, 19899570), (15, 18572932), (20, 13929699), (21, 13266380), (28, 9949785), (30, 9286466), (35, 7959828), (42, 6633190), (60, 4643233), (70, 3979914), (84, 3316595), (105, 2653276), (140, 1989957), (210, 1326638), (420, 663319)]