19857970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 21945806

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 47, 55, 94, 110, 115, 167, 230, 235, 253, 334, 470, 506, 517, 835, 1034, 1081, 1265, 1670, 1837, 2162, 2530, 2585, 3674, 3841, 5170, 5405, 7682, 7849, 9185, 10810, 11891, 15698, 18370, 19205, 23782, 38410, 39245, 42251, 59455, 78490, 84502, 86339, 118910, 172678, 180527, 211255, 361054, 422510, 431695, 863390, 902635, 1805270, 1985797, 3971594, 9928985, 19857970]

約数ペア:

[(1, 19857970), (2, 9928985), (5, 3971594), (10, 1985797), (11, 1805270), (22, 902635), (23, 863390), (46, 431695), (47, 422510), (55, 361054), (94, 211255), (110, 180527), (115, 172678), (167, 118910), (230, 86339), (235, 84502), (253, 78490), (334, 59455), (470, 42251), (506, 39245), (517, 38410), (835, 23782), (1034, 19205), (1081, 18370), (1265, 15698), (1670, 11891), (1837, 10810), (2162, 9185), (2530, 7849), (2585, 7682), (3674, 5405), (3841, 5170)]