20909343

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 34578432

約数和(自身を除く): 13669089

約数列:

[1, 3, 7, 13, 21, 39, 91, 191, 273, 401, 573, 1203, 1337, 2483, 2807, 4011, 5213, 7449, 8421, 15639, 17381, 36491, 52143, 76591, 109473, 229773, 536137, 995683, 1608411, 2987049, 6969781, 20909343]

約数ペア:

[(1, 20909343), (3, 6969781), (7, 2987049), (13, 1608411), (21, 995683), (39, 536137), (91, 229773), (191, 109473), (273, 76591), (401, 52143), (573, 36491), (1203, 17381), (1337, 15639), (2483, 8421), (2807, 7449), (4011, 5213)]