20751255

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{3137}}^1$

素因数の和:3165

約数の個数: 48

約数和(自身を含む): 42927840

約数和(自身を除く): 22176585

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 3137, 6615, 9411, 15685, 21959, 28233, 47055, 65877, 84699, 109795, 141165, 153713, 197631, 329385, 423495, 461139, 592893, 768565, 988155, 1383417, 2305695, 2964465, 4150251, 6917085, 20751255]

約数ペア:

[(1, 20751255), (3, 6917085), (5, 4150251), (7, 2964465), (9, 2305695), (15, 1383417), (21, 988155), (27, 768565), (35, 592893), (45, 461139), (49, 423495), (63, 329385), (105, 197631), (135, 153713), (147, 141165), (189, 109795), (245, 84699), (315, 65877), (441, 47055), (735, 28233), (945, 21959), (1323, 15685), (2205, 9411), (3137, 6615)]