21017722

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:678

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 15425798

約数列:

[1, 2, 11, 22, 23, 46, 73, 146, 253, 506, 569, 803, 1138, 1606, 1679, 3358, 6259, 12518, 13087, 18469, 26174, 36938, 41537, 83074, 143957, 287914, 456907, 913814, 955351, 1910702, 10508861, 21017722]

約数ペア:

[(1, 21017722), (2, 10508861), (11, 1910702), (22, 955351), (23, 913814), (46, 456907), (73, 287914), (146, 143957), (253, 83074), (506, 41537), (569, 36938), (803, 26174), (1138, 18469), (1606, 13087), (1679, 12518), (3358, 6259)]