21295010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:503

約数の個数: 64

約数和(自身を含む): 46033920

約数和(自身を除く): 24738910

約数列:

[1, 2, 5, 10, 11, 19, 22, 23, 38, 46, 55, 95, 110, 115, 190, 209, 230, 253, 418, 437, 443, 506, 874, 886, 1045, 1265, 2090, 2185, 2215, 2530, 4370, 4430, 4807, 4873, 8417, 9614, 9746, 10189, 16834, 20378, 24035, 24365, 42085, 48070, 48730, 50945, 84170, 92587, 101890, 112079, 185174, 193591, 224158, 387182, 462935, 560395, 925870, 967955, 1120790, 1935910, 2129501, 4259002, 10647505, 21295010]

約数ペア:

[(1, 21295010), (2, 10647505), (5, 4259002), (10, 2129501), (11, 1935910), (19, 1120790), (22, 967955), (23, 925870), (38, 560395), (46, 462935), (55, 387182), (95, 224158), (110, 193591), (115, 185174), (190, 112079), (209, 101890), (230, 92587), (253, 84170), (418, 50945), (437, 48730), (443, 48070), (506, 42085), (874, 24365), (886, 24035), (1045, 20378), (1265, 16834), (2090, 10189), (2185, 9746), (2215, 9614), (2530, 8417), (4370, 4873), (4430, 4807)]