19856650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 40890240

約数和(自身を除く): 21033590

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 79, 110, 158, 275, 395, 457, 550, 790, 869, 914, 1738, 1975, 2285, 3950, 4345, 4570, 5027, 8690, 10054, 11425, 21725, 22850, 25135, 36103, 43450, 50270, 72206, 125675, 180515, 251350, 361030, 397133, 794266, 902575, 1805150, 1985665, 3971330, 9928325, 19856650]

約数ペア:

[(1, 19856650), (2, 9928325), (5, 3971330), (10, 1985665), (11, 1805150), (22, 902575), (25, 794266), (50, 397133), (55, 361030), (79, 251350), (110, 180515), (158, 125675), (275, 72206), (395, 50270), (457, 43450), (550, 36103), (790, 25135), (869, 22850), (914, 21725), (1738, 11425), (1975, 10054), (2285, 8690), (3950, 5027), (4345, 4570)]