21210952

素因数分解:

$2^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{727}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 45601920

約数和(自身を除く): 24390968

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 521, 727, 1042, 1454, 2084, 2908, 3647, 4168, 5089, 5816, 7294, 10178, 14588, 20356, 29176, 40712, 378767, 757534, 1515068, 2651369, 3030136, 5302738, 10605476, 21210952]

約数ペア:

[(1, 21210952), (2, 10605476), (4, 5302738), (7, 3030136), (8, 2651369), (14, 1515068), (28, 757534), (56, 378767), (521, 40712), (727, 29176), (1042, 20356), (1454, 14588), (2084, 10178), (2908, 7294), (3647, 5816), (4168, 5089)]