21309236

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8719}}^1$

素因数の和:8783

約数の個数: 24

約数和(自身を含む): 41018880

約数和(自身を除く): 19709644

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8719, 17438, 34876, 113347, 226694, 409793, 453388, 819586, 1639172, 5327309, 10654618, 21309236]

約数ペア:

[(1, 21309236), (2, 10654618), (4, 5327309), (13, 1639172), (26, 819586), (47, 453388), (52, 409793), (94, 226694), (188, 113347), (611, 34876), (1222, 17438), (2444, 8719)]