18890053

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 24498432

約数和(自身を除く): 5608379

約数列:

[1, 7, 13, 41, 61, 83, 91, 287, 427, 533, 581, 793, 1079, 2501, 3403, 3731, 5063, 5551, 7553, 17507, 23821, 32513, 35441, 44239, 65819, 207583, 227591, 309673, 460733, 1453081, 2698579, 18890053]

約数ペア:

[(1, 18890053), (7, 2698579), (13, 1453081), (41, 460733), (61, 309673), (83, 227591), (91, 207583), (287, 65819), (427, 44239), (533, 35441), (581, 32513), (793, 23821), (1079, 17507), (2501, 7553), (3403, 5551), (3731, 5063)]