81105115

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 120355200

約数和(自身を除く): 39250085

約数列:

[1, 5, 7, 13, 35, 65, 91, 397, 449, 455, 1985, 2245, 2779, 3143, 5161, 5837, 13895, 15715, 25805, 29185, 36127, 40859, 178253, 180635, 204295, 891265, 1247771, 2317289, 6238855, 11586445, 16221023, 81105115]

約数ペア:

[(1, 81105115), (5, 16221023), (7, 11586445), (13, 6238855), (35, 2317289), (65, 1247771), (91, 891265), (397, 204295), (449, 180635), (455, 178253), (1985, 40859), (2245, 36127), (2779, 29185), (3143, 25805), (5161, 15715), (5837, 13895)]