20515124

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 45505152

約数和(自身を除く): 24990028

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 47, 49, 68, 94, 98, 119, 131, 188, 196, 238, 262, 329, 476, 524, 658, 799, 833, 917, 1316, 1598, 1666, 1834, 2227, 2303, 3196, 3332, 3668, 4454, 4606, 5593, 6157, 6419, 8908, 9212, 11186, 12314, 12838, 15589, 22372, 24628, 25676, 31178, 39151, 43099, 62356, 78302, 86198, 104669, 109123, 156604, 172396, 209338, 218246, 301693, 418676, 436492, 603386, 732683, 1206772, 1465366, 2930732, 5128781, 10257562, 20515124]

約数ペア:

[(1, 20515124), (2, 10257562), (4, 5128781), (7, 2930732), (14, 1465366), (17, 1206772), (28, 732683), (34, 603386), (47, 436492), (49, 418676), (68, 301693), (94, 218246), (98, 209338), (119, 172396), (131, 156604), (188, 109123), (196, 104669), (238, 86198), (262, 78302), (329, 62356), (476, 43099), (524, 39151), (658, 31178), (799, 25676), (833, 24628), (917, 22372), (1316, 15589), (1598, 12838), (1666, 12314), (1834, 11186), (2227, 9212), (2303, 8908), (3196, 6419), (3332, 6157), (3668, 5593), (4454, 4606)]