21901252

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{347}}^1\times {\mathrm{509}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 39755520

約数和(自身を除く): 17854268

約数列:

[1, 2, 4, 31, 62, 124, 347, 509, 694, 1018, 1388, 2036, 10757, 15779, 21514, 31558, 43028, 63116, 176623, 353246, 706492, 5475313, 10950626, 21901252]

約数ペア:

[(1, 21901252), (2, 10950626), (4, 5475313), (31, 706492), (62, 353246), (124, 176623), (347, 63116), (509, 43028), (694, 31558), (1018, 21514), (1388, 15779), (2036, 10757)]