28131660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{419}}^1$

素因数の和:807

約数の個数: 72

約数和(自身を含む): 85765680

約数和(自身を除く): 57634020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 373, 419, 746, 838, 1119, 1257, 1492, 1676, 1865, 2095, 2238, 2514, 3357, 3730, 3771, 4190, 4476, 5028, 5595, 6285, 6714, 7460, 7542, 8380, 11190, 12570, 13428, 15084, 16785, 18855, 22380, 25140, 33570, 37710, 67140, 75420, 156287, 312574, 468861, 625148, 781435, 937722, 1406583, 1562870, 1875444, 2344305, 2813166, 3125740, 4688610, 5626332, 7032915, 9377220, 14065830, 28131660]

約数ペア:

[(1, 28131660), (2, 14065830), (3, 9377220), (4, 7032915), (5, 5626332), (6, 4688610), (9, 3125740), (10, 2813166), (12, 2344305), (15, 1875444), (18, 1562870), (20, 1406583), (30, 937722), (36, 781435), (45, 625148), (60, 468861), (90, 312574), (180, 156287), (373, 75420), (419, 67140), (746, 37710), (838, 33570), (1119, 25140), (1257, 22380), (1492, 18855), (1676, 16785), (1865, 15084), (2095, 13428), (2238, 12570), (2514, 11190), (3357, 8380), (3730, 7542), (3771, 7460), (4190, 6714), (4476, 6285), (5028, 5595)]