18638998

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:748

約数の個数: 32

約数和(自身を含む): 33527808

約数和(自身を除く): 14888810

約数列:

[1, 2, 7, 14, 31, 62, 67, 134, 217, 434, 469, 641, 938, 1282, 2077, 4154, 4487, 8974, 14539, 19871, 29078, 39742, 42947, 85894, 139097, 278194, 300629, 601258, 1331357, 2662714, 9319499, 18638998]

約数ペア:

[(1, 18638998), (2, 9319499), (7, 2662714), (14, 1331357), (31, 601258), (62, 300629), (67, 278194), (134, 139097), (217, 85894), (434, 42947), (469, 39742), (641, 29078), (938, 19871), (1282, 14539), (2077, 8974), (4154, 4487)]