21171916

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{587}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 37933056

約数和(自身を除く): 16761140

約数列:

[1, 2, 4, 71, 127, 142, 254, 284, 508, 587, 1174, 2348, 9017, 18034, 36068, 41677, 74549, 83354, 149098, 166708, 298196, 5292979, 10585958, 21171916]

約数ペア:

[(1, 21171916), (2, 10585958), (4, 5292979), (71, 298196), (127, 166708), (142, 149098), (254, 83354), (284, 74549), (508, 41677), (587, 36068), (1174, 18034), (2348, 9017)]