21298640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24203}}^1$

素因数の和:24227

約数の個数: 40

約数和(自身を含む): 54023328

約数和(自身を除く): 32724688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24203, 48406, 96812, 121015, 193624, 242030, 266233, 387248, 484060, 532466, 968120, 1064932, 1331165, 1936240, 2129864, 2662330, 4259728, 5324660, 10649320, 21298640]

約数ペア:

[(1, 21298640), (2, 10649320), (4, 5324660), (5, 4259728), (8, 2662330), (10, 2129864), (11, 1936240), (16, 1331165), (20, 1064932), (22, 968120), (40, 532466), (44, 484060), (55, 387248), (80, 266233), (88, 242030), (110, 193624), (176, 121015), (220, 96812), (440, 48406), (880, 24203)]