18927513

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 31676736

約数和(自身を除く): 12749223

約数列:

[1, 3, 9, 11, 27, 33, 73, 81, 97, 99, 219, 243, 291, 297, 657, 803, 873, 891, 1067, 1971, 2409, 2619, 2673, 3201, 5913, 7081, 7227, 7857, 9603, 17739, 21243, 21681, 23571, 28809, 63729, 65043, 77891, 86427, 191187, 195129, 233673, 259281, 573561, 701019, 1720683, 2103057, 6309171, 18927513]

約数ペア:

[(1, 18927513), (3, 6309171), (9, 2103057), (11, 1720683), (27, 701019), (33, 573561), (73, 259281), (81, 233673), (97, 195129), (99, 191187), (219, 86427), (243, 77891), (291, 65043), (297, 63729), (657, 28809), (803, 23571), (873, 21681), (891, 21243), (1067, 17739), (1971, 9603), (2409, 7857), (2619, 7227), (2673, 7081), (3201, 5913)]