20345650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{277}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 41262984

約数和(自身を除く): 20917334

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 113, 130, 226, 277, 325, 554, 565, 650, 1130, 1385, 1469, 2770, 2825, 2938, 3601, 5650, 6925, 7202, 7345, 13850, 14690, 18005, 31301, 36010, 36725, 62602, 73450, 90025, 156505, 180050, 313010, 406913, 782525, 813826, 1565050, 2034565, 4069130, 10172825, 20345650]

約数ペア:

[(1, 20345650), (2, 10172825), (5, 4069130), (10, 2034565), (13, 1565050), (25, 813826), (26, 782525), (50, 406913), (65, 313010), (113, 180050), (130, 156505), (226, 90025), (277, 73450), (325, 62602), (554, 36725), (565, 36010), (650, 31301), (1130, 18005), (1385, 14690), (1469, 13850), (2770, 7345), (2825, 7202), (2938, 6925), (3601, 5650)]