28720260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5147}}^1$

素因数の和:5193

約数の個数: 72

約数和(自身を含む): 89945856

約数和(自身を除く): 61225596

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 5147, 5580, 10294, 15441, 20588, 25735, 30882, 46323, 51470, 61764, 77205, 92646, 102940, 154410, 159557, 185292, 231615, 308820, 319114, 463230, 478671, 638228, 797785, 926460, 957342, 1436013, 1595570, 1914684, 2393355, 2872026, 3191140, 4786710, 5744052, 7180065, 9573420, 14360130, 28720260]

約数ペア:

[(1, 28720260), (2, 14360130), (3, 9573420), (4, 7180065), (5, 5744052), (6, 4786710), (9, 3191140), (10, 2872026), (12, 2393355), (15, 1914684), (18, 1595570), (20, 1436013), (30, 957342), (31, 926460), (36, 797785), (45, 638228), (60, 478671), (62, 463230), (90, 319114), (93, 308820), (124, 231615), (155, 185292), (180, 159557), (186, 154410), (279, 102940), (310, 92646), (372, 77205), (465, 61764), (558, 51470), (620, 46323), (930, 30882), (1116, 25735), (1395, 20588), (1860, 15441), (2790, 10294), (5147, 5580)]