28156960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13537}}^1$

素因数の和:13565

約数の個数: 48

約数和(自身を含む): 71643096

約数和(自身を除く): 43486136

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 13537, 27074, 54148, 67685, 108296, 135370, 175981, 216592, 270740, 351962, 433184, 541480, 703924, 879905, 1082960, 1407848, 1759810, 2165920, 2815696, 3519620, 5631392, 7039240, 14078480, 28156960]

約数ペア:

[(1, 28156960), (2, 14078480), (4, 7039240), (5, 5631392), (8, 3519620), (10, 2815696), (13, 2165920), (16, 1759810), (20, 1407848), (26, 1082960), (32, 879905), (40, 703924), (52, 541480), (65, 433184), (80, 351962), (104, 270740), (130, 216592), (160, 175981), (208, 135370), (260, 108296), (416, 67685), (520, 54148), (1040, 27074), (2080, 13537)]