21000724732

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{823}}^1\times {\mathrm{881}}^1$

素因数の和:2278

約数の個数: 48

約数和(自身を含む): 39742581312

約数和(自身を除く): 18741856580

約数列:

[1, 2, 4, 13, 26, 52, 557, 823, 881, 1114, 1646, 1762, 2228, 3292, 3524, 7241, 10699, 11453, 14482, 21398, 22906, 28964, 42796, 45812, 458411, 490717, 725063, 916822, 981434, 1450126, 1833644, 1962868, 2900252, 5959343, 6379321, 9425819, 11918686, 12758642, 18851638, 23837372, 25517284, 37703276, 403860091, 807720182, 1615440364, 5250181183, 10500362366, 21000724732]

約数ペア:

[(1, 21000724732), (2, 10500362366), (4, 5250181183), (13, 1615440364), (26, 807720182), (52, 403860091), (557, 37703276), (823, 25517284), (881, 23837372), (1114, 18851638), (1646, 12758642), (1762, 11918686), (2228, 9425819), (3292, 6379321), (3524, 5959343), (7241, 2900252), (10699, 1962868), (11453, 1833644), (14482, 1450126), (21398, 981434), (22906, 916822), (28964, 725063), (42796, 490717), (45812, 458411)]