21308469

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{877}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 35400960

約数和(自身を除く): 14092491

約数列:

[1, 3, 7, 13, 21, 39, 89, 91, 267, 273, 623, 877, 1157, 1869, 2631, 3471, 6139, 8099, 11401, 18417, 24297, 34203, 78053, 79807, 234159, 239421, 546371, 1014689, 1639113, 3044067, 7102823, 21308469]

約数ペア:

[(1, 21308469), (3, 7102823), (7, 3044067), (13, 1639113), (21, 1014689), (39, 546371), (89, 239421), (91, 234159), (267, 79807), (273, 78053), (623, 34203), (877, 24297), (1157, 18417), (1869, 11401), (2631, 8099), (3471, 6139)]