81009460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1381}}^1$

素因数の和:1816

約数の個数: 48

約数和(自身を含む): 195027840

約数和(自身を除く): 114018380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 419, 838, 1381, 1676, 2095, 2762, 2933, 4190, 5524, 5866, 6905, 8380, 9667, 11732, 13810, 14665, 19334, 27620, 29330, 38668, 48335, 58660, 96670, 193340, 578639, 1157278, 2314556, 2893195, 4050473, 5786390, 8100946, 11572780, 16201892, 20252365, 40504730, 81009460]

約数ペア:

[(1, 81009460), (2, 40504730), (4, 20252365), (5, 16201892), (7, 11572780), (10, 8100946), (14, 5786390), (20, 4050473), (28, 2893195), (35, 2314556), (70, 1157278), (140, 578639), (419, 193340), (838, 96670), (1381, 58660), (1676, 48335), (2095, 38668), (2762, 29330), (2933, 27620), (4190, 19334), (5524, 14665), (5866, 13810), (6905, 11732), (8380, 9667)]