518420

素因数分解:

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

素因数の和:69

約数の個数: 54

約数和(自身を含む): 1323882

約数和(自身を除く): 805462

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 529, 644, 805, 980, 1058, 1127, 1610, 2116, 2254, 2645, 3220, 3703, 4508, 5290, 5635, 7406, 10580, 11270, 14812, 18515, 22540, 25921, 37030, 51842, 74060, 103684, 129605, 259210, 518420]

約数ペア:

[(1, 518420), (2, 259210), (4, 129605), (5, 103684), (7, 74060), (10, 51842), (14, 37030), (20, 25921), (23, 22540), (28, 18515), (35, 14812), (46, 11270), (49, 10580), (70, 7406), (92, 5635), (98, 5290), (115, 4508), (140, 3703), (161, 3220), (196, 2645), (230, 2254), (245, 2116), (322, 1610), (460, 1127), (490, 1058), (529, 980), (644, 805)]