128216920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{1459}}^1$

素因数の和:1509

約数の個数: 64

約数和(自身を含む): 312732000

約数和(自身を除く): 184515080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1459, 1690, 2197, 2918, 3380, 4394, 5836, 6760, 7295, 8788, 10985, 11672, 14590, 17576, 18967, 21970, 29180, 37934, 43940, 58360, 75868, 87880, 94835, 151736, 189670, 246571, 379340, 493142, 758680, 986284, 1232855, 1972568, 2465710, 3205423, 4931420, 6410846, 9862840, 12821692, 16027115, 25643384, 32054230, 64108460, 128216920]

約数ペア:

[(1, 128216920), (2, 64108460), (4, 32054230), (5, 25643384), (8, 16027115), (10, 12821692), (13, 9862840), (20, 6410846), (26, 4931420), (40, 3205423), (52, 2465710), (65, 1972568), (104, 1232855), (130, 986284), (169, 758680), (260, 493142), (338, 379340), (520, 246571), (676, 189670), (845, 151736), (1352, 94835), (1459, 87880), (1690, 75868), (2197, 58360), (2918, 43940), (3380, 37934), (4394, 29180), (5836, 21970), (6760, 18967), (7295, 17576), (8788, 14590), (10985, 11672)]