21431020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{593}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 27467060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 593, 695, 1186, 1390, 1807, 2372, 2780, 2965, 3614, 5930, 7228, 7709, 9035, 11860, 15418, 18070, 30836, 36140, 38545, 77090, 82427, 154180, 164854, 329708, 412135, 824270, 1071551, 1648540, 2143102, 4286204, 5357755, 10715510, 21431020]

約数ペア:

[(1, 21431020), (2, 10715510), (4, 5357755), (5, 4286204), (10, 2143102), (13, 1648540), (20, 1071551), (26, 824270), (52, 412135), (65, 329708), (130, 164854), (139, 154180), (260, 82427), (278, 77090), (556, 38545), (593, 36140), (695, 30836), (1186, 18070), (1390, 15418), (1807, 11860), (2372, 9035), (2780, 7709), (2965, 7228), (3614, 5930)]