1291230820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{32789}}^1$

素因数の和:32988

約数の個数: 48

約数和(自身を含む): 2974708800

約数和(自身を除く): 1683477980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 716, 895, 1790, 1969, 3580, 3938, 7876, 9845, 19690, 32789, 39380, 65578, 131156, 163945, 327890, 360679, 655780, 721358, 1442716, 1803395, 3606790, 5869231, 7213580, 11738462, 23476924, 29346155, 58692310, 64561541, 117384620, 129123082, 258246164, 322807705, 645615410, 1291230820]

約数ペア:

[(1, 1291230820), (2, 645615410), (4, 322807705), (5, 258246164), (10, 129123082), (11, 117384620), (20, 64561541), (22, 58692310), (44, 29346155), (55, 23476924), (110, 11738462), (179, 7213580), (220, 5869231), (358, 3606790), (716, 1803395), (895, 1442716), (1790, 721358), (1969, 655780), (3580, 360679), (3938, 327890), (7876, 163945), (9845, 131156), (19690, 65578), (32789, 39380)]