278311686925

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1\times {\mathrm{6131}}^1$

素因数の和:6910

約数の個数: 48

約数和(自身を含む): 359401621824

約数和(自身を除く): 81089934899

約数列:

[1, 5, 25, 41, 67, 205, 335, 661, 1025, 1675, 2747, 3305, 6131, 13735, 16525, 27101, 30655, 44287, 68675, 135505, 153275, 221435, 251371, 410777, 677525, 1107175, 1256855, 1815767, 2053885, 4052591, 6284275, 9078835, 10269425, 16841857, 20262955, 45394175, 84209285, 101314775, 166156231, 271523597, 421046425, 830781155, 1357617985, 4153905775, 6788089925, 11132467477, 55662337385, 278311686925]

約数ペア:

[(1, 278311686925), (5, 55662337385), (25, 11132467477), (41, 6788089925), (67, 4153905775), (205, 1357617985), (335, 830781155), (661, 421046425), (1025, 271523597), (1675, 166156231), (2747, 101314775), (3305, 84209285), (6131, 45394175), (13735, 20262955), (16525, 16841857), (27101, 10269425), (30655, 9078835), (44287, 6284275), (68675, 4052591), (135505, 2053885), (153275, 1815767), (221435, 1256855), (251371, 1107175), (410777, 677525)]