21357777

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{6317}}^1$

素因数の和:6357

約数の個数: 24

約数和(自身を含む): 34572096

約数和(自身を除く): 13214319

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 6317, 18951, 44219, 132657, 145291, 309533, 435873, 928599, 1017037, 3051111, 7119259, 21357777]

約数ペア:

[(1, 21357777), (3, 7119259), (7, 3051111), (21, 1017037), (23, 928599), (49, 435873), (69, 309533), (147, 145291), (161, 132657), (483, 44219), (1127, 18951), (3381, 6317)]