81865854

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20959}}^1$

素因数の和:21005

約数の個数: 48

約数和(自身を含む): 209264640

約数和(自身を除く): 127398786

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 62, 63, 93, 126, 186, 217, 279, 434, 558, 651, 1302, 1953, 3906, 20959, 41918, 62877, 125754, 146713, 188631, 293426, 377262, 440139, 649729, 880278, 1299458, 1320417, 1949187, 2640834, 3898374, 4548103, 5847561, 9096206, 11695122, 13644309, 27288618, 40932927, 81865854]

約数ペア:

[(1, 81865854), (2, 40932927), (3, 27288618), (6, 13644309), (7, 11695122), (9, 9096206), (14, 5847561), (18, 4548103), (21, 3898374), (31, 2640834), (42, 1949187), (62, 1320417), (63, 1299458), (93, 880278), (126, 649729), (186, 440139), (217, 377262), (279, 293426), (434, 188631), (558, 146713), (651, 125754), (1302, 62877), (1953, 41918), (3906, 20959)]