21489532

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1801}}^1$

素因数の和:1981

約数の個数: 24

約数和(自身を含む): 39860240

約数和(自身を除く): 18370708

約数列:

[1, 2, 4, 19, 38, 76, 157, 314, 628, 1801, 2983, 3602, 5966, 7204, 11932, 34219, 68438, 136876, 282757, 565514, 1131028, 5372383, 10744766, 21489532]

約数ペア:

[(1, 21489532), (2, 10744766), (4, 5372383), (19, 1131028), (38, 565514), (76, 282757), (157, 136876), (314, 68438), (628, 34219), (1801, 11932), (2983, 7204), (3602, 5966)]