312789080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1\times {\mathrm{457}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 718217280

約数和(自身を除く): 405428200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 241, 284, 355, 457, 482, 568, 710, 914, 964, 1205, 1420, 1828, 1928, 2285, 2410, 2840, 3656, 4570, 4820, 9140, 9640, 17111, 18280, 32447, 34222, 64894, 68444, 85555, 110137, 129788, 136888, 162235, 171110, 220274, 259576, 324470, 342220, 440548, 550685, 648940, 684440, 881096, 1101370, 1297880, 2202740, 4405480, 7819727, 15639454, 31278908, 39098635, 62557816, 78197270, 156394540, 312789080]

約数ペア:

[(1, 312789080), (2, 156394540), (4, 78197270), (5, 62557816), (8, 39098635), (10, 31278908), (20, 15639454), (40, 7819727), (71, 4405480), (142, 2202740), (241, 1297880), (284, 1101370), (355, 881096), (457, 684440), (482, 648940), (568, 550685), (710, 440548), (914, 342220), (964, 324470), (1205, 259576), (1420, 220274), (1828, 171110), (1928, 162235), (2285, 136888), (2410, 129788), (2840, 110137), (3656, 85555), (4570, 68444), (4820, 64894), (9140, 34222), (9640, 32447), (17111, 18280)]