81580540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2647}}^1$

素因数の和:2746

約数の個数: 48

約数和(自身を含む): 181504512

約数和(自身を除く): 99923972

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 67, 92, 115, 134, 230, 268, 335, 460, 670, 1340, 1541, 2647, 3082, 5294, 6164, 7705, 10588, 13235, 15410, 26470, 30820, 52940, 60881, 121762, 177349, 243524, 304405, 354698, 608810, 709396, 886745, 1217620, 1773490, 3546980, 4079027, 8158054, 16316108, 20395135, 40790270, 81580540]

約数ペア:

[(1, 81580540), (2, 40790270), (4, 20395135), (5, 16316108), (10, 8158054), (20, 4079027), (23, 3546980), (46, 1773490), (67, 1217620), (92, 886745), (115, 709396), (134, 608810), (230, 354698), (268, 304405), (335, 243524), (460, 177349), (670, 121762), (1340, 60881), (1541, 52940), (2647, 30820), (3082, 26470), (5294, 15410), (6164, 13235), (7705, 10588)]