21555230

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2243}}^1$

素因数の和:2312

約数の個数: 24

約数和(自身を含む): 40109256

約数和(自身を除く): 18554026

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 961, 1922, 2243, 4486, 4805, 9610, 11215, 22430, 69533, 139066, 347665, 695330, 2155523, 4311046, 10777615, 21555230]

約数ペア:

[(1, 21555230), (2, 10777615), (5, 4311046), (10, 2155523), (31, 695330), (62, 347665), (155, 139066), (310, 69533), (961, 22430), (1922, 11215), (2243, 9610), (4486, 4805)]