28897480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{809}}^1$

素因数の和:886

約数の個数: 64

約数和(自身を含む): 69984000

約数和(自身を除く): 41086520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 760, 809, 893, 940, 1618, 1786, 1880, 3236, 3572, 4045, 4465, 6472, 7144, 8090, 8930, 15371, 16180, 17860, 30742, 32360, 35720, 38023, 61484, 76046, 76855, 122968, 152092, 153710, 190115, 304184, 307420, 380230, 614840, 722437, 760460, 1444874, 1520920, 2889748, 3612185, 5779496, 7224370, 14448740, 28897480]

約数ペア:

[(1, 28897480), (2, 14448740), (4, 7224370), (5, 5779496), (8, 3612185), (10, 2889748), (19, 1520920), (20, 1444874), (38, 760460), (40, 722437), (47, 614840), (76, 380230), (94, 307420), (95, 304184), (152, 190115), (188, 153710), (190, 152092), (235, 122968), (376, 76855), (380, 76046), (470, 61484), (760, 38023), (809, 35720), (893, 32360), (940, 30742), (1618, 17860), (1786, 16180), (1880, 15371), (3236, 8930), (3572, 8090), (4045, 7144), (4465, 6472)]