21893820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{28069}}^1$

素因数の和:28094

約数の個数: 48

約数和(自身を含む): 66020640

約数和(自身を除く): 44126820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 28069, 56138, 84207, 112276, 140345, 168414, 280690, 336828, 364897, 421035, 561380, 729794, 842070, 1094691, 1459588, 1684140, 1824485, 2189382, 3648970, 4378764, 5473455, 7297940, 10946910, 21893820]

約数ペア:

[(1, 21893820), (2, 10946910), (3, 7297940), (4, 5473455), (5, 4378764), (6, 3648970), (10, 2189382), (12, 1824485), (13, 1684140), (15, 1459588), (20, 1094691), (26, 842070), (30, 729794), (39, 561380), (52, 421035), (60, 364897), (65, 336828), (78, 280690), (130, 168414), (156, 140345), (195, 112276), (260, 84207), (390, 56138), (780, 28069)]