21320916

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 30570924

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174, 197, 311, 348, 394, 591, 622, 788, 933, 1182, 1244, 1866, 2364, 3732, 5713, 9019, 11426, 17139, 18038, 22852, 27057, 34278, 36076, 54114, 61267, 68556, 108228, 122534, 183801, 245068, 367602, 735204, 1776743, 3553486, 5330229, 7106972, 10660458, 21320916]

約数ペア:

[(1, 21320916), (2, 10660458), (3, 7106972), (4, 5330229), (6, 3553486), (12, 1776743), (29, 735204), (58, 367602), (87, 245068), (116, 183801), (174, 122534), (197, 108228), (311, 68556), (348, 61267), (394, 54114), (591, 36076), (622, 34278), (788, 27057), (933, 22852), (1182, 18038), (1244, 17139), (1866, 11426), (2364, 9019), (3732, 5713)]