1270220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 3134208

約数和(自身を除く): 1863988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 211, 215, 301, 422, 430, 602, 844, 860, 1055, 1204, 1477, 1505, 2110, 2954, 3010, 4220, 5908, 6020, 7385, 9073, 14770, 18146, 29540, 36292, 45365, 63511, 90730, 127022, 181460, 254044, 317555, 635110, 1270220]

約数ペア:

[(1, 1270220), (2, 635110), (4, 317555), (5, 254044), (7, 181460), (10, 127022), (14, 90730), (20, 63511), (28, 45365), (35, 36292), (43, 29540), (70, 18146), (86, 14770), (140, 9073), (172, 7385), (211, 6020), (215, 5908), (301, 4220), (422, 3010), (430, 2954), (602, 2110), (844, 1505), (860, 1477), (1055, 1204)]