4172780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 9408000

約数和(自身を除く): 5235220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 139, 158, 190, 278, 316, 380, 395, 556, 695, 790, 1390, 1501, 1580, 2641, 2780, 3002, 5282, 6004, 7505, 10564, 10981, 13205, 15010, 21962, 26410, 30020, 43924, 52820, 54905, 109810, 208639, 219620, 417278, 834556, 1043195, 2086390, 4172780]

約数ペア:

[(1, 4172780), (2, 2086390), (4, 1043195), (5, 834556), (10, 417278), (19, 219620), (20, 208639), (38, 109810), (76, 54905), (79, 52820), (95, 43924), (139, 30020), (158, 26410), (190, 21962), (278, 15010), (316, 13205), (380, 10981), (395, 10564), (556, 7505), (695, 6004), (790, 5282), (1390, 3002), (1501, 2780), (1580, 2641)]