213020740

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{379}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 453902400

約数和(自身を除く): 240881660

約数列:

[1, 2, 4, 5, 10, 20, 157, 179, 314, 358, 379, 628, 716, 758, 785, 895, 1516, 1570, 1790, 1895, 3140, 3580, 3790, 7580, 28103, 56206, 59503, 67841, 112412, 119006, 135682, 140515, 238012, 271364, 281030, 297515, 339205, 562060, 595030, 678410, 1190060, 1356820, 10651037, 21302074, 42604148, 53255185, 106510370, 213020740]

約数ペア:

[(1, 213020740), (2, 106510370), (4, 53255185), (5, 42604148), (10, 21302074), (20, 10651037), (157, 1356820), (179, 1190060), (314, 678410), (358, 595030), (379, 562060), (628, 339205), (716, 297515), (758, 281030), (785, 271364), (895, 238012), (1516, 140515), (1570, 135682), (1790, 119006), (1895, 112412), (3140, 67841), (3580, 59503), (3790, 56206), (7580, 28103)]