639548

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1$

素因数の和:282

約数の個数: 36

約数和(自身を含む): 1407672

約数和(自身を除く): 768124

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 251, 364, 502, 637, 1004, 1274, 1757, 2548, 3263, 3514, 6526, 7028, 12299, 13052, 22841, 24598, 45682, 49196, 91364, 159887, 319774, 639548]

約数ペア:

[(1, 639548), (2, 319774), (4, 159887), (7, 91364), (13, 49196), (14, 45682), (26, 24598), (28, 22841), (49, 13052), (52, 12299), (91, 7028), (98, 6526), (182, 3514), (196, 3263), (251, 2548), (364, 1757), (502, 1274), (637, 1004)]