21475281

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^2$

素因数の和:229

約数の個数: 24

約数和(自身を含む): 30745344

約数和(自身を除く): 9270063

約数列:

[1, 3, 31, 37, 79, 93, 111, 237, 1147, 2449, 2923, 3441, 6241, 7347, 8769, 18723, 90613, 193471, 230917, 271839, 580413, 692751, 7158427, 21475281]

約数ペア:

[(1, 21475281), (3, 7158427), (31, 692751), (37, 580413), (79, 271839), (93, 230917), (111, 193471), (237, 90613), (1147, 18723), (2449, 8769), (2923, 7347), (3441, 6241)]