19545020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1217}}^1$

素因数の和:1310

約数の個数: 48

約数和(自身を含む): 45426528

約数和(自身を除く): 25881508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1217, 1460, 1606, 2434, 3212, 4015, 4868, 6085, 8030, 12170, 13387, 16060, 24340, 26774, 53548, 66935, 88841, 133870, 177682, 267740, 355364, 444205, 888410, 977251, 1776820, 1954502, 3909004, 4886255, 9772510, 19545020]

約数ペア:

[(1, 19545020), (2, 9772510), (4, 4886255), (5, 3909004), (10, 1954502), (11, 1776820), (20, 977251), (22, 888410), (44, 444205), (55, 355364), (73, 267740), (110, 177682), (146, 133870), (220, 88841), (292, 66935), (365, 53548), (730, 26774), (803, 24340), (1217, 16060), (1460, 13387), (1606, 12170), (2434, 8030), (3212, 6085), (4015, 4868)]