18996694

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 31298400

約数和(自身を除く): 12301706

約数列:

[1, 2, 19, 38, 41, 82, 89, 137, 178, 274, 779, 1558, 1691, 2603, 3382, 3649, 5206, 5617, 7298, 11234, 12193, 24386, 69331, 106723, 138662, 213446, 231667, 463334, 499913, 999826, 9498347, 18996694]

約数ペア:

[(1, 18996694), (2, 9498347), (19, 999826), (38, 499913), (41, 463334), (82, 231667), (89, 213446), (137, 138662), (178, 106723), (274, 69331), (779, 24386), (1558, 12193), (1691, 11234), (2603, 7298), (3382, 5617), (3649, 5206)]