21237488

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78079}}^1$

素因数の和:78104

約数の個数: 20

約数和(自身を含む): 43568640

約数和(自身を除く): 22331152

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78079, 156158, 312316, 624632, 1249264, 1327343, 2654686, 5309372, 10618744, 21237488]

約数ペア:

[(1, 21237488), (2, 10618744), (4, 5309372), (8, 2654686), (16, 1327343), (17, 1249264), (34, 624632), (68, 312316), (136, 156158), (272, 78079)]