20161869

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:91

約数の個数: 64

約数和(自身を含む): 36556800

約数和(自身を除く): 16394931

約数列:

[1, 3, 7, 13, 19, 21, 23, 39, 57, 69, 91, 133, 161, 169, 247, 273, 299, 399, 437, 483, 507, 741, 897, 1183, 1311, 1729, 2093, 2197, 3059, 3211, 3549, 3887, 5187, 5681, 6279, 6591, 9177, 9633, 11661, 15379, 17043, 22477, 27209, 39767, 41743, 46137, 50531, 67431, 73853, 81627, 119301, 125229, 151593, 221559, 292201, 353717, 516971, 876603, 960089, 1061151, 1550913, 2880267, 6720623, 20161869]

約数ペア:

[(1, 20161869), (3, 6720623), (7, 2880267), (13, 1550913), (19, 1061151), (21, 960089), (23, 876603), (39, 516971), (57, 353717), (69, 292201), (91, 221559), (133, 151593), (161, 125229), (169, 119301), (247, 81627), (273, 73853), (299, 67431), (399, 50531), (437, 46137), (483, 41743), (507, 39767), (741, 27209), (897, 22477), (1183, 17043), (1311, 15379), (1729, 11661), (2093, 9633), (2197, 9177), (3059, 6591), (3211, 6279), (3549, 5681), (3887, 5187)]