20889615

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 13704945

約数列:

[1, 3, 5, 15, 43, 129, 139, 215, 233, 417, 645, 695, 699, 1165, 2085, 3495, 5977, 10019, 17931, 29885, 30057, 32387, 50095, 89655, 97161, 150285, 161935, 485805, 1392641, 4177923, 6963205, 20889615]

約数ペア:

[(1, 20889615), (3, 6963205), (5, 4177923), (15, 1392641), (43, 485805), (129, 161935), (139, 150285), (215, 97161), (233, 89655), (417, 50095), (645, 32387), (695, 30057), (699, 29885), (1165, 17931), (2085, 10019), (3495, 5977)]