81921945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{2879}}^1$

素因数の和:3165

約数の個数: 32

約数和(自身を含む): 150405120

約数和(自身を除く): 68483175

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 271, 813, 1355, 1897, 2879, 4065, 5691, 8637, 9485, 14395, 20153, 28455, 43185, 60459, 100765, 302295, 780209, 2340627, 3901045, 5461463, 11703135, 16384389, 27307315, 81921945]

約数ペア:

[(1, 81921945), (3, 27307315), (5, 16384389), (7, 11703135), (15, 5461463), (21, 3901045), (35, 2340627), (105, 780209), (271, 302295), (813, 100765), (1355, 60459), (1897, 43185), (2879, 28455), (4065, 20153), (5691, 14395), (8637, 9485)]