20381487

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1543}}^1$

素因数の和:1607

約数の個数: 32

約数和(自身を含む): 33795072

約数和(自身を除く): 13413585

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1543, 1887, 4403, 4629, 10801, 13209, 26231, 32403, 57091, 78693, 171273, 183617, 399637, 550851, 970547, 1198911, 2911641, 6793829, 20381487]

約数ペア:

[(1, 20381487), (3, 6793829), (7, 2911641), (17, 1198911), (21, 970547), (37, 550851), (51, 399637), (111, 183617), (119, 171273), (259, 78693), (357, 57091), (629, 32403), (777, 26231), (1543, 13209), (1887, 10801), (4403, 4629)]