21299960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48409}}^1$

素因数の和:48431

約数の個数: 32

約数和(自身を含む): 52282800

約数和(自身を除く): 30982840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48409, 96818, 193636, 242045, 387272, 484090, 532499, 968180, 1064998, 1936360, 2129996, 2662495, 4259992, 5324990, 10649980, 21299960]

約数ペア:

[(1, 21299960), (2, 10649980), (4, 5324990), (5, 4259992), (8, 2662495), (10, 2129996), (11, 1936360), (20, 1064998), (22, 968180), (40, 532499), (44, 484090), (55, 387272), (88, 242045), (110, 193636), (220, 96818), (440, 48409)]