131416540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1447}}^1$

素因数の和:1714

約数の個数: 48

約数和(自身を含む): 291916800

約数和(自身を除く): 160500260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 239, 380, 478, 956, 1195, 1447, 2390, 2894, 4541, 4780, 5788, 7235, 9082, 14470, 18164, 22705, 27493, 28940, 45410, 54986, 90820, 109972, 137465, 274930, 345833, 549860, 691666, 1383332, 1729165, 3458330, 6570827, 6916660, 13141654, 26283308, 32854135, 65708270, 131416540]

約数ペア:

[(1, 131416540), (2, 65708270), (4, 32854135), (5, 26283308), (10, 13141654), (19, 6916660), (20, 6570827), (38, 3458330), (76, 1729165), (95, 1383332), (190, 691666), (239, 549860), (380, 345833), (478, 274930), (956, 137465), (1195, 109972), (1447, 90820), (2390, 54986), (2894, 45410), (4541, 28940), (4780, 27493), (5788, 22705), (7235, 18164), (9082, 14470)]