70986980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 153679680

約数和(自身を除く): 82692700

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 197, 215, 394, 419, 430, 788, 838, 860, 985, 1676, 1970, 2095, 3940, 4190, 8380, 8471, 16942, 18017, 33884, 36034, 42355, 72068, 82543, 84710, 90085, 165086, 169420, 180170, 330172, 360340, 412715, 825430, 1650860, 3549349, 7098698, 14197396, 17746745, 35493490, 70986980]

約数ペア:

[(1, 70986980), (2, 35493490), (4, 17746745), (5, 14197396), (10, 7098698), (20, 3549349), (43, 1650860), (86, 825430), (172, 412715), (197, 360340), (215, 330172), (394, 180170), (419, 169420), (430, 165086), (788, 90085), (838, 84710), (860, 82543), (985, 72068), (1676, 42355), (1970, 36034), (2095, 33884), (3940, 18017), (4190, 16942), (8380, 8471)]