21026811

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{619}}^1$

素因数の和:715

約数の個数: 24

約数和(自身を含む): 30861120

約数和(自身を除く): 9834309

約数列:

[1, 3, 13, 39, 67, 169, 201, 507, 619, 871, 1857, 2613, 8047, 11323, 24141, 33969, 41473, 104611, 124419, 313833, 539149, 1617447, 7008937, 21026811]

約数ペア:

[(1, 21026811), (3, 7008937), (13, 1617447), (39, 539149), (67, 313833), (169, 124419), (201, 104611), (507, 41473), (619, 33969), (871, 24141), (1857, 11323), (2613, 8047)]