1664390650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2560601}}^1$

素因数の和:2560626

約数の個数: 24

約数和(自身を含む): 3333903804

約数和(自身を除く): 1669513154

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 2560601, 5121202, 12803005, 25606010, 33287813, 64015025, 66575626, 128030050, 166439065, 332878130, 832195325, 1664390650]

約数ペア:

[(1, 1664390650), (2, 832195325), (5, 332878130), (10, 166439065), (13, 128030050), (25, 66575626), (26, 64015025), (50, 33287813), (65, 25606010), (130, 12803005), (325, 5121202), (650, 2560601)]