20472595

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 30834720

約数和(自身を除く): 10362125

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 121, 137, 143, 209, 247, 605, 685, 715, 1045, 1235, 1507, 1573, 1781, 2299, 2603, 2717, 7535, 7865, 8905, 11495, 13015, 13585, 16577, 19591, 28633, 29887, 33839, 82885, 97955, 143165, 149435, 169195, 215501, 314963, 372229, 1077505, 1574815, 1861145, 4094519, 20472595]

約数ペア:

[(1, 20472595), (5, 4094519), (11, 1861145), (13, 1574815), (19, 1077505), (55, 372229), (65, 314963), (95, 215501), (121, 169195), (137, 149435), (143, 143165), (209, 97955), (247, 82885), (605, 33839), (685, 29887), (715, 28633), (1045, 19591), (1235, 16577), (1507, 13585), (1573, 13015), (1781, 11495), (2299, 8905), (2603, 7865), (2717, 7535)]