821444120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{43787}}^1$

素因数の和:43872

約数の個数: 64

約数和(自身を含む): 2143860480

約数和(自身を除く): 1322416360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1340, 1876, 2345, 2680, 3752, 4690, 9380, 18760, 43787, 87574, 175148, 218935, 306509, 350296, 437870, 613018, 875740, 1226036, 1532545, 1751480, 2452072, 2933729, 3065090, 5867458, 6130180, 11734916, 12260360, 14668645, 20536103, 23469832, 29337290, 41072206, 58674580, 82144412, 102680515, 117349160, 164288824, 205361030, 410722060, 821444120]

約数ペア:

[(1, 821444120), (2, 410722060), (4, 205361030), (5, 164288824), (7, 117349160), (8, 102680515), (10, 82144412), (14, 58674580), (20, 41072206), (28, 29337290), (35, 23469832), (40, 20536103), (56, 14668645), (67, 12260360), (70, 11734916), (134, 6130180), (140, 5867458), (268, 3065090), (280, 2933729), (335, 2452072), (469, 1751480), (536, 1532545), (670, 1226036), (938, 875740), (1340, 613018), (1876, 437870), (2345, 350296), (2680, 306509), (3752, 218935), (4690, 175148), (9380, 87574), (18760, 43787)]