420017320

素因数分解:

$2^3\times 5^1\times {\mathrm{1667}}^1\times {\mathrm{6299}}^1$

素因数の和:7977

約数の個数: 32

約数和(自身を含む): 945756000

約数和(自身を除く): 525738680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1667, 3334, 6299, 6668, 8335, 12598, 13336, 16670, 25196, 31495, 33340, 50392, 62990, 66680, 125980, 251960, 10500433, 21000866, 42001732, 52502165, 84003464, 105004330, 210008660, 420017320]

約数ペア:

[(1, 420017320), (2, 210008660), (4, 105004330), (5, 84003464), (8, 52502165), (10, 42001732), (20, 21000866), (40, 10500433), (1667, 251960), (3334, 125980), (6299, 66680), (6668, 62990), (8335, 50392), (12598, 33340), (13336, 31495), (16670, 25196)]