21211380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117841}}^1$

素因数の和:117856

約数の個数: 36

約数和(自身を含む): 64341732

約数和(自身を除く): 43130352

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117841, 235682, 353523, 471364, 589205, 707046, 1060569, 1178410, 1414092, 1767615, 2121138, 2356820, 3535230, 4242276, 5302845, 7070460, 10605690, 21211380]

約数ペア:

[(1, 21211380), (2, 10605690), (3, 7070460), (4, 5302845), (5, 4242276), (6, 3535230), (9, 2356820), (10, 2121138), (12, 1767615), (15, 1414092), (18, 1178410), (20, 1060569), (30, 707046), (36, 589205), (45, 471364), (60, 353523), (90, 235682), (180, 117841)]