7810220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 18095616

約数和(自身を除く): 10285396

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 271, 524, 542, 655, 1084, 1310, 1355, 1441, 2620, 2710, 2882, 2981, 5420, 5764, 5962, 7205, 11924, 14410, 14905, 28820, 29810, 35501, 59620, 71002, 142004, 177505, 355010, 390511, 710020, 781022, 1562044, 1952555, 3905110, 7810220]

約数ペア:

[(1, 7810220), (2, 3905110), (4, 1952555), (5, 1562044), (10, 781022), (11, 710020), (20, 390511), (22, 355010), (44, 177505), (55, 142004), (110, 71002), (131, 59620), (220, 35501), (262, 29810), (271, 28820), (524, 14905), (542, 14410), (655, 11924), (1084, 7205), (1310, 5962), (1355, 5764), (1441, 5420), (2620, 2981), (2710, 2882)]