18019518

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 41499648

約数和(自身を除く): 23480130

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 47, 66, 74, 94, 111, 141, 157, 222, 282, 314, 407, 471, 517, 814, 942, 1034, 1221, 1551, 1727, 1739, 2442, 3102, 3454, 3478, 5181, 5217, 5809, 7379, 10362, 10434, 11618, 14758, 17427, 19129, 22137, 34854, 38258, 44274, 57387, 63899, 81169, 114774, 127798, 162338, 191697, 243507, 273023, 383394, 487014, 546046, 819069, 1638138, 3003253, 6006506, 9009759, 18019518]

約数ペア:

[(1, 18019518), (2, 9009759), (3, 6006506), (6, 3003253), (11, 1638138), (22, 819069), (33, 546046), (37, 487014), (47, 383394), (66, 273023), (74, 243507), (94, 191697), (111, 162338), (141, 127798), (157, 114774), (222, 81169), (282, 63899), (314, 57387), (407, 44274), (471, 38258), (517, 34854), (814, 22137), (942, 19129), (1034, 17427), (1221, 14758), (1551, 11618), (1727, 10434), (1739, 10362), (2442, 7379), (3102, 5809), (3454, 5217), (3478, 5181)]