26390120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^2$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 63191340

約数和(自身を除く): 36801220

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 197, 340, 394, 680, 788, 985, 1576, 1970, 3349, 3940, 6698, 7880, 13396, 16745, 26792, 33490, 38809, 66980, 77618, 133960, 155236, 194045, 310472, 388090, 659753, 776180, 1319506, 1552360, 2639012, 3298765, 5278024, 6597530, 13195060, 26390120]

約数ペア:

[(1, 26390120), (2, 13195060), (4, 6597530), (5, 5278024), (8, 3298765), (10, 2639012), (17, 1552360), (20, 1319506), (34, 776180), (40, 659753), (68, 388090), (85, 310472), (136, 194045), (170, 155236), (197, 133960), (340, 77618), (394, 66980), (680, 38809), (788, 33490), (985, 26792), (1576, 16745), (1970, 13396), (3349, 7880), (3940, 6698)]