20338715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 7240165

約数列:

[1, 5, 17, 29, 37, 85, 145, 185, 223, 493, 629, 1073, 1115, 2465, 3145, 3791, 5365, 6467, 8251, 18241, 18955, 32335, 41255, 91205, 109939, 140267, 239279, 549695, 701335, 1196395, 4067743, 20338715]

約数ペア:

[(1, 20338715), (5, 4067743), (17, 1196395), (29, 701335), (37, 549695), (85, 239279), (145, 140267), (185, 109939), (223, 91205), (493, 41255), (629, 32335), (1073, 18955), (1115, 18241), (2465, 8251), (3145, 6467), (3791, 5365)]