51520805

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 77220864

約数和(自身を除く): 25700059

約数列:

[1, 5, 7, 23, 35, 41, 49, 115, 161, 205, 223, 245, 287, 805, 943, 1115, 1127, 1435, 1561, 2009, 4715, 5129, 5635, 6601, 7805, 9143, 10045, 10927, 25645, 33005, 35903, 45715, 46207, 54635, 64001, 179515, 210289, 231035, 251321, 320005, 448007, 1051445, 1256605, 1472023, 2240035, 7360115, 10304161, 51520805]

約数ペア:

[(1, 51520805), (5, 10304161), (7, 7360115), (23, 2240035), (35, 1472023), (41, 1256605), (49, 1051445), (115, 448007), (161, 320005), (205, 251321), (223, 231035), (245, 210289), (287, 179515), (805, 64001), (943, 54635), (1115, 46207), (1127, 45715), (1435, 35903), (1561, 33005), (2009, 25645), (4715, 10927), (5129, 10045), (5635, 9143), (6601, 7805)]