21456526

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3803}}^1$

素因数の和:3856

約数の個数: 32

約数和(自身を含む): 40900608

約数和(自身を除く): 19444082

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 182, 217, 403, 434, 806, 2821, 3803, 5642, 7606, 26621, 49439, 53242, 98878, 117893, 235786, 346073, 692146, 825251, 1532609, 1650502, 3065218, 10728263, 21456526]

約数ペア:

[(1, 21456526), (2, 10728263), (7, 3065218), (13, 1650502), (14, 1532609), (26, 825251), (31, 692146), (62, 346073), (91, 235786), (182, 117893), (217, 98878), (403, 53242), (434, 49439), (806, 26621), (2821, 7606), (3803, 5642)]