8219440

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{809}}^1$

素因数の和:949

約数の個数: 40

約数和(自身を含む): 19284480

約数和(自身を除く): 11065040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 809, 1016, 1270, 1618, 2032, 2540, 3236, 4045, 5080, 6472, 8090, 10160, 12944, 16180, 32360, 64720, 102743, 205486, 410972, 513715, 821944, 1027430, 1643888, 2054860, 4109720, 8219440]

約数ペア:

[(1, 8219440), (2, 4109720), (4, 2054860), (5, 1643888), (8, 1027430), (10, 821944), (16, 513715), (20, 410972), (40, 205486), (80, 102743), (127, 64720), (254, 32360), (508, 16180), (635, 12944), (809, 10160), (1016, 8090), (1270, 6472), (1618, 5080), (2032, 4045), (2540, 3236)]