21645720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{60127}}^1$

素因数の和:60144

約数の個数: 48

約数和(自身を含む): 70349760

約数和(自身を除く): 48704040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 60127, 120254, 180381, 240508, 300635, 360762, 481016, 541143, 601270, 721524, 901905, 1082286, 1202540, 1443048, 1803810, 2164572, 2405080, 2705715, 3607620, 4329144, 5411430, 7215240, 10822860, 21645720]

約数ペア:

[(1, 21645720), (2, 10822860), (3, 7215240), (4, 5411430), (5, 4329144), (6, 3607620), (8, 2705715), (9, 2405080), (10, 2164572), (12, 1803810), (15, 1443048), (18, 1202540), (20, 1082286), (24, 901905), (30, 721524), (36, 601270), (40, 541143), (45, 481016), (60, 360762), (72, 300635), (90, 240508), (120, 180381), (180, 120254), (360, 60127)]