21238616

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1511}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 45722880

約数和(自身を除く): 24484264

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1511, 1757, 2008, 3022, 3514, 6044, 7028, 10577, 12088, 14056, 21154, 42308, 84616, 379261, 758522, 1517044, 2654827, 3034088, 5309654, 10619308, 21238616]

約数ペア:

[(1, 21238616), (2, 10619308), (4, 5309654), (7, 3034088), (8, 2654827), (14, 1517044), (28, 758522), (56, 379261), (251, 84616), (502, 42308), (1004, 21154), (1511, 14056), (1757, 12088), (2008, 10577), (3022, 7028), (3514, 6044)]