20649951

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6427}}^1$

素因数の和:6460

約数の個数: 32

約数和(自身を含む): 37025280

約数和(自身を除く): 16375329

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6427, 19281, 44989, 57843, 109259, 134967, 173529, 327777, 404901, 764813, 983331, 1214703, 2294439, 2949993, 6883317, 20649951]

約数ペア:

[(1, 20649951), (3, 6883317), (7, 2949993), (9, 2294439), (17, 1214703), (21, 983331), (27, 764813), (51, 404901), (63, 327777), (119, 173529), (153, 134967), (189, 109259), (357, 57843), (459, 44989), (1071, 19281), (3213, 6427)]