68811920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2663}}^1$

素因数の和:2712

約数の個数: 80

約数和(自身を含む): 178381440

約数和(自身を除く): 109569520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 2663, 3230, 5168, 5326, 6460, 10652, 12920, 13315, 21304, 25840, 26630, 42608, 45271, 50597, 53260, 90542, 101194, 106520, 181084, 202388, 213040, 226355, 252985, 362168, 404776, 452710, 505970, 724336, 809552, 860149, 905420, 1011940, 1720298, 1810840, 2023880, 3440596, 3621680, 4047760, 4300745, 6881192, 8601490, 13762384, 17202980, 34405960, 68811920]

約数ペア:

[(1, 68811920), (2, 34405960), (4, 17202980), (5, 13762384), (8, 8601490), (10, 6881192), (16, 4300745), (17, 4047760), (19, 3621680), (20, 3440596), (34, 2023880), (38, 1810840), (40, 1720298), (68, 1011940), (76, 905420), (80, 860149), (85, 809552), (95, 724336), (136, 505970), (152, 452710), (170, 404776), (190, 362168), (272, 252985), (304, 226355), (323, 213040), (340, 202388), (380, 181084), (646, 106520), (680, 101194), (760, 90542), (1292, 53260), (1360, 50597), (1520, 45271), (1615, 42608), (2584, 26630), (2663, 25840), (3230, 21304), (5168, 13315), (5326, 12920), (6460, 10652)]