28168540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 60963840

約数和(自身を除く): 32795300

約数列:

[1, 2, 4, 5, 10, 20, 71, 83, 142, 166, 239, 284, 332, 355, 415, 478, 710, 830, 956, 1195, 1420, 1660, 2390, 4780, 5893, 11786, 16969, 19837, 23572, 29465, 33938, 39674, 58930, 67876, 79348, 84845, 99185, 117860, 169690, 198370, 339380, 396740, 1408427, 2816854, 5633708, 7042135, 14084270, 28168540]

約数ペア:

[(1, 28168540), (2, 14084270), (4, 7042135), (5, 5633708), (10, 2816854), (20, 1408427), (71, 396740), (83, 339380), (142, 198370), (166, 169690), (239, 117860), (284, 99185), (332, 84845), (355, 79348), (415, 67876), (478, 58930), (710, 39674), (830, 33938), (956, 29465), (1195, 23572), (1420, 19837), (1660, 16969), (2390, 11786), (4780, 5893)]