78185180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 169165920

約数和(自身を除く): 90980740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 229, 397, 430, 458, 794, 860, 916, 1145, 1588, 1985, 2290, 3970, 4580, 7940, 9847, 17071, 19694, 34142, 39388, 49235, 68284, 85355, 90913, 98470, 170710, 181826, 196940, 341420, 363652, 454565, 909130, 1818260, 3909259, 7818518, 15637036, 19546295, 39092590, 78185180]

約数ペア:

[(1, 78185180), (2, 39092590), (4, 19546295), (5, 15637036), (10, 7818518), (20, 3909259), (43, 1818260), (86, 909130), (172, 454565), (215, 363652), (229, 341420), (397, 196940), (430, 181826), (458, 170710), (794, 98470), (860, 90913), (916, 85355), (1145, 68284), (1588, 49235), (1985, 39388), (2290, 34142), (3970, 19694), (4580, 17071), (7940, 9847)]