21312999

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2279

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 11409561

約数列:

[1, 3, 9, 29, 37, 87, 111, 261, 333, 1073, 2207, 3219, 6621, 9657, 19863, 64003, 81659, 192009, 244977, 576027, 734931, 2368111, 7104333, 21312999]

約数ペア:

[(1, 21312999), (3, 7104333), (9, 2368111), (29, 734931), (37, 576027), (87, 244977), (111, 192009), (261, 81659), (333, 64003), (1073, 19863), (2207, 9657), (3219, 6621)]