28265172

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{443}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 71359680

約数和(自身を除く): 43094508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 409, 443, 818, 886, 1227, 1329, 1636, 1772, 2454, 2658, 4908, 5316, 5317, 5759, 10634, 11518, 15951, 17277, 21268, 23036, 31902, 34554, 63804, 69108, 181187, 362374, 543561, 724748, 1087122, 2174244, 2355431, 4710862, 7066293, 9421724, 14132586, 28265172]

約数ペア:

[(1, 28265172), (2, 14132586), (3, 9421724), (4, 7066293), (6, 4710862), (12, 2355431), (13, 2174244), (26, 1087122), (39, 724748), (52, 543561), (78, 362374), (156, 181187), (409, 69108), (443, 63804), (818, 34554), (886, 31902), (1227, 23036), (1329, 21268), (1636, 17277), (1772, 15951), (2454, 11518), (2658, 10634), (4908, 5759), (5316, 5317)]