20577711

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 34444800

約数和(自身を除く): 13867089

約数列:

[1, 3, 7, 11, 21, 33, 77, 229, 231, 389, 687, 1167, 1603, 2519, 2723, 4279, 4809, 7557, 8169, 12837, 17633, 29953, 52899, 89081, 89859, 267243, 623567, 979891, 1870701, 2939673, 6859237, 20577711]

約数ペア:

[(1, 20577711), (3, 6859237), (7, 2939673), (11, 1870701), (21, 979891), (33, 623567), (77, 267243), (229, 89859), (231, 89081), (389, 52899), (687, 29953), (1167, 17633), (1603, 12837), (2519, 8169), (2723, 7557), (4279, 4809)]