812777780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{5171}}^1$

素因数の和:5480

約数の個数: 48

約数和(自身を含む): 1772547840

約数和(自身を除く): 959770060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 271, 290, 542, 580, 1084, 1355, 2710, 5171, 5420, 7859, 10342, 15718, 20684, 25855, 31436, 39295, 51710, 78590, 103420, 149959, 157180, 299918, 599836, 749795, 1401341, 1499590, 2802682, 2999180, 5605364, 7006705, 14013410, 28026820, 40638889, 81277778, 162555556, 203194445, 406388890, 812777780]

約数ペア:

[(1, 812777780), (2, 406388890), (4, 203194445), (5, 162555556), (10, 81277778), (20, 40638889), (29, 28026820), (58, 14013410), (116, 7006705), (145, 5605364), (271, 2999180), (290, 2802682), (542, 1499590), (580, 1401341), (1084, 749795), (1355, 599836), (2710, 299918), (5171, 157180), (5420, 149959), (7859, 103420), (10342, 78590), (15718, 51710), (20684, 39295), (25855, 31436)]