81164447

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 111029760

約数和(自身を除く): 29865313

約数列:

[1, 7, 13, 19, 23, 91, 133, 157, 161, 169, 247, 299, 437, 1099, 1183, 1729, 2041, 2093, 2983, 3059, 3211, 3611, 3887, 5681, 14287, 20881, 22477, 25277, 26533, 27209, 38779, 39767, 46943, 68609, 73853, 185731, 271453, 328601, 480263, 504127, 516971, 610259, 891917, 3528889, 4271813, 6243419, 11594921, 81164447]

約数ペア:

[(1, 81164447), (7, 11594921), (13, 6243419), (19, 4271813), (23, 3528889), (91, 891917), (133, 610259), (157, 516971), (161, 504127), (169, 480263), (247, 328601), (299, 271453), (437, 185731), (1099, 73853), (1183, 68609), (1729, 46943), (2041, 39767), (2093, 38779), (2983, 27209), (3059, 26533), (3211, 25277), (3611, 22477), (3887, 20881), (5681, 14287)]