28729520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:534

約数の個数: 80

約数和(自身を含む): 72182880

約数和(自身を除く): 43453360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 461, 656, 760, 779, 820, 922, 1520, 1558, 1640, 1844, 2305, 3116, 3280, 3688, 3895, 4610, 6232, 7376, 7790, 8759, 9220, 12464, 15580, 17518, 18440, 18901, 31160, 35036, 36880, 37802, 43795, 62320, 70072, 75604, 87590, 94505, 140144, 151208, 175180, 189010, 302416, 350360, 359119, 378020, 700720, 718238, 756040, 1436476, 1512080, 1795595, 2872952, 3591190, 5745904, 7182380, 14364760, 28729520]

約数ペア:

[(1, 28729520), (2, 14364760), (4, 7182380), (5, 5745904), (8, 3591190), (10, 2872952), (16, 1795595), (19, 1512080), (20, 1436476), (38, 756040), (40, 718238), (41, 700720), (76, 378020), (80, 359119), (82, 350360), (95, 302416), (152, 189010), (164, 175180), (190, 151208), (205, 140144), (304, 94505), (328, 87590), (380, 75604), (410, 70072), (461, 62320), (656, 43795), (760, 37802), (779, 36880), (820, 35036), (922, 31160), (1520, 18901), (1558, 18440), (1640, 17518), (1844, 15580), (2305, 12464), (3116, 9220), (3280, 8759), (3688, 7790), (3895, 7376), (4610, 6232)]