20456488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{823}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 41529600

約数和(自身を除く): 21073112

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 239, 478, 823, 956, 1646, 1912, 3107, 3292, 6214, 6584, 10699, 12428, 21398, 24856, 42796, 85592, 196697, 393394, 786788, 1573576, 2557061, 5114122, 10228244, 20456488]

約数ペア:

[(1, 20456488), (2, 10228244), (4, 5114122), (8, 2557061), (13, 1573576), (26, 786788), (52, 393394), (104, 196697), (239, 85592), (478, 42796), (823, 24856), (956, 21398), (1646, 12428), (1912, 10699), (3107, 6584), (3292, 6214)]