20422240

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1171}}^1$

素因数の和:1295

約数の個数: 48

約数和(自身を含む): 48731760

約数和(自身を除く): 28309520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1171, 1744, 2180, 2342, 3488, 4360, 4684, 5855, 8720, 9368, 11710, 17440, 18736, 23420, 37472, 46840, 93680, 127639, 187360, 255278, 510556, 638195, 1021112, 1276390, 2042224, 2552780, 4084448, 5105560, 10211120, 20422240]

約数ペア:

[(1, 20422240), (2, 10211120), (4, 5105560), (5, 4084448), (8, 2552780), (10, 2042224), (16, 1276390), (20, 1021112), (32, 638195), (40, 510556), (80, 255278), (109, 187360), (160, 127639), (218, 93680), (436, 46840), (545, 37472), (872, 23420), (1090, 18736), (1171, 17440), (1744, 11710), (2180, 9368), (2342, 8720), (3488, 5855), (4360, 4684)]