81385738

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2118

約数の個数: 32

約数和(自身を含む): 145006848

約数和(自身を除く): 63621110

約数列:

[1, 2, 7, 14, 41, 71, 82, 142, 287, 497, 574, 994, 1997, 2911, 3994, 5822, 13979, 20377, 27958, 40754, 81877, 141787, 163754, 283574, 573139, 992509, 1146278, 1985018, 5813267, 11626534, 40692869, 81385738]

約数ペア:

[(1, 81385738), (2, 40692869), (7, 11626534), (14, 5813267), (41, 1985018), (71, 1146278), (82, 992509), (142, 573139), (287, 283574), (497, 163754), (574, 141787), (994, 81877), (1997, 40754), (2911, 27958), (3994, 20377), (5822, 13979)]