21921660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121787}}^1$

素因数の和:121802

約数の個数: 36

約数和(自身を含む): 66496248

約数和(自身を除く): 44574588

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121787, 243574, 365361, 487148, 608935, 730722, 1096083, 1217870, 1461444, 1826805, 2192166, 2435740, 3653610, 4384332, 5480415, 7307220, 10960830, 21921660]

約数ペア:

[(1, 21921660), (2, 10960830), (3, 7307220), (4, 5480415), (5, 4384332), (6, 3653610), (9, 2435740), (10, 2192166), (12, 1826805), (15, 1461444), (18, 1217870), (20, 1096083), (30, 730722), (36, 608935), (45, 487148), (60, 365361), (90, 243574), (180, 121787)]