28009956

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 70716800

約数和(自身を除く): 42706844

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 409, 439, 818, 878, 1227, 1317, 1636, 1756, 2454, 2634, 4908, 5268, 5317, 5707, 10634, 11414, 15951, 17121, 21268, 22828, 31902, 34242, 63804, 68484, 179551, 359102, 538653, 718204, 1077306, 2154612, 2334163, 4668326, 7002489, 9336652, 14004978, 28009956]

約数ペア:

[(1, 28009956), (2, 14004978), (3, 9336652), (4, 7002489), (6, 4668326), (12, 2334163), (13, 2154612), (26, 1077306), (39, 718204), (52, 538653), (78, 359102), (156, 179551), (409, 68484), (439, 63804), (818, 34242), (878, 31902), (1227, 22828), (1317, 21268), (1636, 17121), (1756, 15951), (2454, 11414), (2634, 10634), (4908, 5707), (5268, 5317)]