21465080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5897}}^1$

素因数の和:5928

約数の個数: 64

約数和(自身を含む): 59451840

約数和(自身を除く): 37986760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5897, 11794, 23588, 29485, 41279, 47176, 58970, 76661, 82558, 117940, 153322, 165116, 206395, 235880, 306644, 330232, 383305, 412790, 536627, 613288, 766610, 825580, 1073254, 1533220, 1651160, 2146508, 2683135, 3066440, 4293016, 5366270, 10732540, 21465080]

約数ペア:

[(1, 21465080), (2, 10732540), (4, 5366270), (5, 4293016), (7, 3066440), (8, 2683135), (10, 2146508), (13, 1651160), (14, 1533220), (20, 1073254), (26, 825580), (28, 766610), (35, 613288), (40, 536627), (52, 412790), (56, 383305), (65, 330232), (70, 306644), (91, 235880), (104, 206395), (130, 165116), (140, 153322), (182, 117940), (260, 82558), (280, 76661), (364, 58970), (455, 47176), (520, 41279), (728, 29485), (910, 23588), (1820, 11794), (3640, 5897)]