17980040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 44271360

約数和(自身を除く): 26291320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 487, 520, 568, 710, 923, 974, 1420, 1846, 1948, 2435, 2840, 3692, 3896, 4615, 4870, 6331, 7384, 9230, 9740, 12662, 18460, 19480, 25324, 31655, 34577, 36920, 50648, 63310, 69154, 126620, 138308, 172885, 253240, 276616, 345770, 449501, 691540, 899002, 1383080, 1798004, 2247505, 3596008, 4495010, 8990020, 17980040]

約数ペア:

[(1, 17980040), (2, 8990020), (4, 4495010), (5, 3596008), (8, 2247505), (10, 1798004), (13, 1383080), (20, 899002), (26, 691540), (40, 449501), (52, 345770), (65, 276616), (71, 253240), (104, 172885), (130, 138308), (142, 126620), (260, 69154), (284, 63310), (355, 50648), (487, 36920), (520, 34577), (568, 31655), (710, 25324), (923, 19480), (974, 18460), (1420, 12662), (1846, 9740), (1948, 9230), (2435, 7384), (2840, 6331), (3692, 4870), (3896, 4615)]