31240880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:426

約数の個数: 80

約数和(自身を含む): 80137728

約数和(自身を除く): 48896848

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 131, 176, 220, 262, 271, 440, 524, 542, 655, 880, 1048, 1084, 1310, 1355, 1441, 2096, 2168, 2620, 2710, 2882, 2981, 4336, 5240, 5420, 5764, 5962, 7205, 10480, 10840, 11528, 11924, 14410, 14905, 21680, 23056, 23848, 28820, 29810, 35501, 47696, 57640, 59620, 71002, 115280, 119240, 142004, 177505, 238480, 284008, 355010, 390511, 568016, 710020, 781022, 1420040, 1562044, 1952555, 2840080, 3124088, 3905110, 6248176, 7810220, 15620440, 31240880]

約数ペア:

[(1, 31240880), (2, 15620440), (4, 7810220), (5, 6248176), (8, 3905110), (10, 3124088), (11, 2840080), (16, 1952555), (20, 1562044), (22, 1420040), (40, 781022), (44, 710020), (55, 568016), (80, 390511), (88, 355010), (110, 284008), (131, 238480), (176, 177505), (220, 142004), (262, 119240), (271, 115280), (440, 71002), (524, 59620), (542, 57640), (655, 47696), (880, 35501), (1048, 29810), (1084, 28820), (1310, 23848), (1355, 23056), (1441, 21680), (2096, 14905), (2168, 14410), (2620, 11924), (2710, 11528), (2882, 10840), (2981, 10480), (4336, 7205), (5240, 5962), (5420, 5764)]