51501891

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 87021216

約数和(自身を除く): 35519325

約数列:

[1, 3, 7, 17, 21, 37, 49, 51, 111, 119, 147, 259, 357, 557, 629, 777, 833, 1671, 1813, 1887, 2499, 3899, 4403, 5439, 9469, 11697, 13209, 20609, 27293, 28407, 30821, 61827, 66283, 81879, 92463, 144263, 198849, 350353, 432789, 463981, 1009841, 1051059, 1391943, 2452471, 3029523, 7357413, 17167297, 51501891]

約数ペア:

[(1, 51501891), (3, 17167297), (7, 7357413), (17, 3029523), (21, 2452471), (37, 1391943), (49, 1051059), (51, 1009841), (111, 463981), (119, 432789), (147, 350353), (259, 198849), (357, 144263), (557, 92463), (629, 81879), (777, 66283), (833, 61827), (1671, 30821), (1813, 28407), (1887, 27293), (2499, 20609), (3899, 13209), (4403, 11697), (5439, 9469)]