21212856

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{42089}}^1$

素因数の和:42108

約数の個数: 48

約数和(自身を含む): 65660400

約数和(自身を除く): 44447544

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 42089, 84178, 126267, 168356, 252534, 294623, 336712, 378801, 505068, 589246, 757602, 883869, 1010136, 1178492, 1515204, 1767738, 2356984, 2651607, 3030408, 3535476, 5303214, 7070952, 10606428, 21212856]

約数ペア:

[(1, 21212856), (2, 10606428), (3, 7070952), (4, 5303214), (6, 3535476), (7, 3030408), (8, 2651607), (9, 2356984), (12, 1767738), (14, 1515204), (18, 1178492), (21, 1010136), (24, 883869), (28, 757602), (36, 589246), (42, 505068), (56, 378801), (63, 336712), (72, 294623), (84, 252534), (126, 168356), (168, 126267), (252, 84178), (504, 42089)]