18488368

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1085

約数の個数: 40

約数和(自身を含む): 38363120

約数和(自身を除く): 19874752

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 976, 997, 1159, 1994, 2318, 3988, 4636, 7976, 9272, 15952, 18544, 18943, 37886, 60817, 75772, 121634, 151544, 243268, 303088, 486536, 973072, 1155523, 2311046, 4622092, 9244184, 18488368]

約数ペア:

[(1, 18488368), (2, 9244184), (4, 4622092), (8, 2311046), (16, 1155523), (19, 973072), (38, 486536), (61, 303088), (76, 243268), (122, 151544), (152, 121634), (244, 75772), (304, 60817), (488, 37886), (976, 18943), (997, 18544), (1159, 15952), (1994, 9272), (2318, 7976), (3988, 4636)]