31306580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{617}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 68523840

約数和(自身を除く): 37217260

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 430, 590, 617, 860, 1180, 1234, 2468, 2537, 3085, 5074, 6170, 10148, 12340, 12685, 25370, 26531, 36403, 50740, 53062, 72806, 106124, 132655, 145612, 182015, 265310, 364030, 530620, 728060, 1565329, 3130658, 6261316, 7826645, 15653290, 31306580]

約数ペア:

[(1, 31306580), (2, 15653290), (4, 7826645), (5, 6261316), (10, 3130658), (20, 1565329), (43, 728060), (59, 530620), (86, 364030), (118, 265310), (172, 182015), (215, 145612), (236, 132655), (295, 106124), (430, 72806), (590, 53062), (617, 50740), (860, 36403), (1180, 26531), (1234, 25370), (2468, 12685), (2537, 12340), (3085, 10148), (5074, 6170)]