81293156

素因数分解:

$2^2\times 7^2\times {\mathrm{241}}^1\times {\mathrm{1721}}^1$

素因数の和:1980

約数の個数: 36

約数和(自身を含む): 166272876

約数和(自身を除く): 84979720

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 241, 482, 964, 1687, 1721, 3374, 3442, 6748, 6884, 11809, 12047, 23618, 24094, 47236, 48188, 84329, 168658, 337316, 414761, 829522, 1659044, 2903327, 5806654, 11613308, 20323289, 40646578, 81293156]

約数ペア:

[(1, 81293156), (2, 40646578), (4, 20323289), (7, 11613308), (14, 5806654), (28, 2903327), (49, 1659044), (98, 829522), (196, 414761), (241, 337316), (482, 168658), (964, 84329), (1687, 48188), (1721, 47236), (3374, 24094), (3442, 23618), (6748, 12047), (6884, 11809)]