28810840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{227}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 68947200

約数和(自身を除く): 40136360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 167, 190, 227, 334, 380, 454, 668, 760, 835, 908, 1135, 1336, 1670, 1816, 2270, 3173, 3340, 4313, 4540, 6346, 6680, 8626, 9080, 12692, 15865, 17252, 21565, 25384, 31730, 34504, 37909, 43130, 63460, 75818, 86260, 126920, 151636, 172520, 189545, 303272, 379090, 720271, 758180, 1440542, 1516360, 2881084, 3601355, 5762168, 7202710, 14405420, 28810840]

約数ペア:

[(1, 28810840), (2, 14405420), (4, 7202710), (5, 5762168), (8, 3601355), (10, 2881084), (19, 1516360), (20, 1440542), (38, 758180), (40, 720271), (76, 379090), (95, 303272), (152, 189545), (167, 172520), (190, 151636), (227, 126920), (334, 86260), (380, 75818), (454, 63460), (668, 43130), (760, 37909), (835, 34504), (908, 31730), (1135, 25384), (1336, 21565), (1670, 17252), (1816, 15865), (2270, 12692), (3173, 9080), (3340, 8626), (4313, 6680), (4540, 6346)]