64878681

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{691}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 105228288

約数和(自身を除く): 40349607

約数列:

[1, 3, 7, 17, 21, 51, 119, 263, 357, 691, 789, 1841, 2073, 4471, 4837, 5523, 11747, 13413, 14511, 31297, 35241, 82229, 93891, 181733, 246687, 545199, 1272131, 3089461, 3816393, 9268383, 21626227, 64878681]

約数ペア:

[(1, 64878681), (3, 21626227), (7, 9268383), (17, 3816393), (21, 3089461), (51, 1272131), (119, 545199), (263, 246687), (357, 181733), (691, 93891), (789, 82229), (1841, 35241), (2073, 31297), (4471, 14511), (4837, 13413), (5523, 11747)]