156696980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1831}}^1$

素因数の和:2240

約数の個数: 48

約数和(自身を含む): 360097920

約数和(自身を除く): 203400940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 389, 778, 1556, 1831, 1945, 3662, 3890, 4279, 7324, 7780, 8558, 9155, 17116, 18310, 20141, 21395, 36620, 40282, 42790, 80564, 85580, 100705, 201410, 402820, 712259, 1424518, 2849036, 3561295, 7122590, 7834849, 14245180, 15669698, 31339396, 39174245, 78348490, 156696980]

約数ペア:

[(1, 156696980), (2, 78348490), (4, 39174245), (5, 31339396), (10, 15669698), (11, 14245180), (20, 7834849), (22, 7122590), (44, 3561295), (55, 2849036), (110, 1424518), (220, 712259), (389, 402820), (778, 201410), (1556, 100705), (1831, 85580), (1945, 80564), (3662, 42790), (3890, 40282), (4279, 36620), (7324, 21395), (7780, 20141), (8558, 18310), (9155, 17116)]