21480056

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2909}}^1$

素因数の和:2999

約数の個数: 32

約数和(自身を含む): 43999200

約数和(自身を除く): 22519144

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2909, 3692, 5818, 7384, 11636, 23272, 37817, 75634, 151268, 206539, 302536, 413078, 826156, 1652312, 2685007, 5370014, 10740028, 21480056]

約数ペア:

[(1, 21480056), (2, 10740028), (4, 5370014), (8, 2685007), (13, 1652312), (26, 826156), (52, 413078), (71, 302536), (104, 206539), (142, 151268), (284, 75634), (568, 37817), (923, 23272), (1846, 11636), (2909, 7384), (3692, 5818)]