21994840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78553}}^1$

素因数の和:78571

約数の個数: 32

約数和(自身を含む): 56558880

約数和(自身を除く): 34564040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78553, 157106, 314212, 392765, 549871, 628424, 785530, 1099742, 1571060, 2199484, 2749355, 3142120, 4398968, 5498710, 10997420, 21994840]

約数ペア:

[(1, 21994840), (2, 10997420), (4, 5498710), (5, 4398968), (7, 3142120), (8, 2749355), (10, 2199484), (14, 1571060), (20, 1099742), (28, 785530), (35, 628424), (40, 549871), (56, 392765), (70, 314212), (140, 157106), (280, 78553)]