1815202220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{240743}}^1$

素因数の和:240794

約数の個数: 48

約数和(自身を含む): 4246724160

約数和(自身を除く): 2431521940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 3770, 7540, 240743, 481486, 962972, 1203715, 2407430, 3129659, 4814860, 6259318, 6981547, 12518636, 13963094, 15648295, 27926188, 31296590, 34907735, 62593180, 69815470, 90760111, 139630940, 181520222, 363040444, 453800555, 907601110, 1815202220]

約数ペア:

[(1, 1815202220), (2, 907601110), (4, 453800555), (5, 363040444), (10, 181520222), (13, 139630940), (20, 90760111), (26, 69815470), (29, 62593180), (52, 34907735), (58, 31296590), (65, 27926188), (116, 15648295), (130, 13963094), (145, 12518636), (260, 6981547), (290, 6259318), (377, 4814860), (580, 3129659), (754, 2407430), (1508, 1203715), (1885, 962972), (3770, 481486), (7540, 240743)]