21072316

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2843}}^1$

素因数の和:2973

約数の個数: 24

約数和(自身を含む): 39417840

約数和(自身を除く): 18345524

約数列:

[1, 2, 4, 17, 34, 68, 109, 218, 436, 1853, 2843, 3706, 5686, 7412, 11372, 48331, 96662, 193324, 309887, 619774, 1239548, 5268079, 10536158, 21072316]

約数ペア:

[(1, 21072316), (2, 10536158), (4, 5268079), (17, 1239548), (34, 619774), (68, 309887), (109, 193324), (218, 96662), (436, 48331), (1853, 11372), (2843, 7412), (3706, 5686)]