81255818

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:220

約数の個数: 72

約数和(自身を含む): 159590880

約数和(自身を除く): 78335062

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 49, 98, 119, 133, 151, 238, 266, 289, 302, 323, 578, 646, 833, 931, 1057, 1666, 1862, 2023, 2114, 2261, 2567, 2869, 4046, 4522, 5134, 5491, 5738, 7399, 10982, 14161, 14798, 15827, 17969, 20083, 28322, 31654, 35938, 38437, 40166, 43639, 48773, 76874, 87278, 97546, 125783, 140581, 251566, 269059, 281162, 305473, 341411, 538118, 610946, 682822, 829141, 1658282, 2138311, 2389877, 4276622, 4779754, 5803987, 11607974, 40627909, 81255818]

約数ペア:

[(1, 81255818), (2, 40627909), (7, 11607974), (14, 5803987), (17, 4779754), (19, 4276622), (34, 2389877), (38, 2138311), (49, 1658282), (98, 829141), (119, 682822), (133, 610946), (151, 538118), (238, 341411), (266, 305473), (289, 281162), (302, 269059), (323, 251566), (578, 140581), (646, 125783), (833, 97546), (931, 87278), (1057, 76874), (1666, 48773), (1862, 43639), (2023, 40166), (2114, 38437), (2261, 35938), (2567, 31654), (2869, 28322), (4046, 20083), (4522, 17969), (5134, 15827), (5491, 14798), (5738, 14161), (7399, 10982)]