20717774

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4639}}^1$

素因数の和:4688

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 19371826

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 77, 154, 203, 319, 406, 638, 2233, 4466, 4639, 9278, 32473, 51029, 64946, 102058, 134531, 269062, 357203, 714406, 941717, 1479841, 1883434, 2959682, 10358887, 20717774]

約数ペア:

[(1, 20717774), (2, 10358887), (7, 2959682), (11, 1883434), (14, 1479841), (22, 941717), (29, 714406), (58, 357203), (77, 269062), (154, 134531), (203, 102058), (319, 64946), (406, 51029), (638, 32473), (2233, 9278), (4466, 4639)]