78419960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 182476800

約数和(自身を除く): 104056840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 127, 172, 215, 254, 344, 359, 430, 508, 635, 718, 860, 1016, 1270, 1436, 1720, 1795, 2540, 2872, 3590, 5080, 5461, 7180, 10922, 14360, 15437, 21844, 27305, 30874, 43688, 45593, 54610, 61748, 77185, 91186, 109220, 123496, 154370, 182372, 218440, 227965, 308740, 364744, 455930, 617480, 911860, 1823720, 1960499, 3920998, 7841996, 9802495, 15683992, 19604990, 39209980, 78419960]

約数ペア:

[(1, 78419960), (2, 39209980), (4, 19604990), (5, 15683992), (8, 9802495), (10, 7841996), (20, 3920998), (40, 1960499), (43, 1823720), (86, 911860), (127, 617480), (172, 455930), (215, 364744), (254, 308740), (344, 227965), (359, 218440), (430, 182372), (508, 154370), (635, 123496), (718, 109220), (860, 91186), (1016, 77185), (1270, 61748), (1436, 54610), (1720, 45593), (1795, 43688), (2540, 30874), (2872, 27305), (3590, 21844), (5080, 15437), (5461, 14360), (7180, 10922)]