20986335

素因数分解:

$3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1163}}^1$

素因数の和:1575

約数の個数: 24

約数和(自身を含む): 36498384

約数和(自身を除く): 15512049

約数列:

[1, 3, 5, 9, 15, 45, 401, 1163, 1203, 2005, 3489, 3609, 5815, 6015, 10467, 17445, 18045, 52335, 466363, 1399089, 2331815, 4197267, 6995445, 20986335]

約数ペア:

[(1, 20986335), (3, 6995445), (5, 4197267), (9, 2331815), (15, 1399089), (45, 466363), (401, 52335), (1163, 18045), (1203, 17445), (2005, 10467), (3489, 6015), (3609, 5815)]