278345665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1879}}^1$

素因数の和:1993

約数の個数: 32

約数和(自身を含む): 375217920

約数和(自身を除く): 96872255

約数列:

[1, 5, 13, 43, 53, 65, 215, 265, 559, 689, 1879, 2279, 2795, 3445, 9395, 11395, 24427, 29627, 80797, 99587, 122135, 148135, 403985, 497935, 1050361, 1294631, 4282241, 5251805, 6473155, 21411205, 55669133, 278345665]

約数ペア:

[(1, 278345665), (5, 55669133), (13, 21411205), (43, 6473155), (53, 5251805), (65, 4282241), (215, 1294631), (265, 1050361), (559, 497935), (689, 403985), (1879, 148135), (2279, 122135), (2795, 99587), (3445, 80797), (9395, 29627), (11395, 24427)]