21212272

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12163}}^1$

素因数の和:12280

約数の個数: 20

約数和(自身を含む): 41479240

約数和(自身を除く): 20266968

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12163, 24326, 48652, 97304, 194608, 1325767, 2651534, 5303068, 10606136, 21212272]

約数ペア:

[(1, 21212272), (2, 10606136), (4, 5303068), (8, 2651534), (16, 1325767), (109, 194608), (218, 97304), (436, 48652), (872, 24326), (1744, 12163)]