21138045380

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6484063}}^1$

素因数の和:6484235

約数の個数: 24

約数和(自身を含む): 44662232832

約数和(自身を除く): 23524187452

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6484063, 12968126, 25936252, 32420315, 64840630, 129681260, 1056902269, 2113804538, 4227609076, 5284511345, 10569022690, 21138045380]

約数ペア:

[(1, 21138045380), (2, 10569022690), (4, 5284511345), (5, 4227609076), (10, 2113804538), (20, 1056902269), (163, 129681260), (326, 64840630), (652, 32420315), (815, 25936252), (1630, 12968126), (3260, 6484063)]