18217479

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^2\times {\mathrm{139}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 28318080

約数和(自身を除く): 10100601

約数列:

[1, 3, 7, 21, 79, 139, 237, 417, 553, 973, 1659, 2919, 6241, 10981, 18723, 32943, 43687, 76867, 131061, 230601, 867499, 2602497, 6072493, 18217479]

約数ペア:

[(1, 18217479), (3, 6072493), (7, 2602497), (21, 867499), (79, 230601), (139, 131061), (237, 76867), (417, 43687), (553, 32943), (973, 18723), (1659, 10981), (2919, 6241)]