21228784

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{4591}}^1$

素因数の和:4633

約数の個数: 30

約数和(自身を含む): 43702064

約数和(自身を除く): 22473280

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 289, 578, 1156, 2312, 4591, 4624, 9182, 18364, 36728, 73456, 78047, 156094, 312188, 624376, 1248752, 1326799, 2653598, 5307196, 10614392, 21228784]

約数ペア:

[(1, 21228784), (2, 10614392), (4, 5307196), (8, 2653598), (16, 1326799), (17, 1248752), (34, 624376), (68, 312188), (136, 156094), (272, 78047), (289, 73456), (578, 36728), (1156, 18364), (2312, 9182), (4591, 4624)]