21018765

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 35107200

約数和(自身を除く): 14088435

約数列:

[1, 3, 5, 15, 29, 87, 145, 211, 229, 435, 633, 687, 1055, 1145, 3165, 3435, 6119, 6641, 18357, 19923, 30595, 33205, 48319, 91785, 99615, 144957, 241595, 724785, 1401251, 4203753, 7006255, 21018765]

約数ペア:

[(1, 21018765), (3, 7006255), (5, 4203753), (15, 1401251), (29, 724785), (87, 241595), (145, 144957), (211, 99615), (229, 91785), (435, 48319), (633, 33205), (687, 30595), (1055, 19923), (1145, 18357), (3165, 6641), (3435, 6119)]