51461680

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2503}}^1$

素因数の和:2773

約数の個数: 40

約数和(自身を含む): 120161952

約数和(自身を除く): 68700272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 2056, 2503, 2570, 4112, 5006, 5140, 10012, 10280, 12515, 20024, 20560, 25030, 40048, 50060, 100120, 200240, 643271, 1286542, 2573084, 3216355, 5146168, 6432710, 10292336, 12865420, 25730840, 51461680]

約数ペア:

[(1, 51461680), (2, 25730840), (4, 12865420), (5, 10292336), (8, 6432710), (10, 5146168), (16, 3216355), (20, 2573084), (40, 1286542), (80, 643271), (257, 200240), (514, 100120), (1028, 50060), (1285, 40048), (2056, 25030), (2503, 20560), (2570, 20024), (4112, 12515), (5006, 10280), (5140, 10012)]