18417973

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 22945920

約数和(自身を除く): 4527947

約数列:

[1, 7, 19, 49, 73, 133, 271, 511, 931, 1387, 1897, 3577, 5149, 9709, 13279, 19783, 36043, 67963, 138481, 252301, 375877, 969367, 2631139, 18417973]

約数ペア:

[(1, 18417973), (7, 2631139), (19, 969367), (49, 375877), (73, 252301), (133, 138481), (271, 67963), (511, 36043), (931, 19783), (1387, 13279), (1897, 9709), (3577, 5149)]