42289820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 94432800

約数和(自身を除く): 52142980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1021, 1090, 2042, 2071, 2180, 4084, 4142, 5105, 8284, 10210, 10355, 19399, 20420, 20710, 38798, 41420, 77596, 96995, 111289, 193990, 222578, 387980, 445156, 556445, 1112890, 2114491, 2225780, 4228982, 8457964, 10572455, 21144910, 42289820]

約数ペア:

[(1, 42289820), (2, 21144910), (4, 10572455), (5, 8457964), (10, 4228982), (19, 2225780), (20, 2114491), (38, 1112890), (76, 556445), (95, 445156), (109, 387980), (190, 222578), (218, 193990), (380, 111289), (436, 96995), (545, 77596), (1021, 41420), (1090, 38798), (2042, 20710), (2071, 20420), (2180, 19399), (4084, 10355), (4142, 10210), (5105, 8284)]