20684040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13259}}^1$

素因数の和:13286

約数の個数: 64

約数和(自身を含む): 66830400

約数和(自身を除く): 46146360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13259, 26518, 39777, 53036, 66295, 79554, 106072, 132590, 159108, 172367, 198885, 265180, 318216, 344734, 397770, 517101, 530360, 689468, 795540, 861835, 1034202, 1378936, 1591080, 1723670, 2068404, 2585505, 3447340, 4136808, 5171010, 6894680, 10342020, 20684040]

約数ペア:

[(1, 20684040), (2, 10342020), (3, 6894680), (4, 5171010), (5, 4136808), (6, 3447340), (8, 2585505), (10, 2068404), (12, 1723670), (13, 1591080), (15, 1378936), (20, 1034202), (24, 861835), (26, 795540), (30, 689468), (39, 530360), (40, 517101), (52, 397770), (60, 344734), (65, 318216), (78, 265180), (104, 198885), (120, 172367), (130, 159108), (156, 132590), (195, 106072), (260, 79554), (312, 66295), (390, 53036), (520, 39777), (780, 26518), (1560, 13259)]