20390630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1439}}^1$

素因数の和:1568

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19526170

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 218, 545, 1090, 1417, 1439, 2834, 2878, 7085, 7195, 14170, 14390, 18707, 37414, 93535, 156851, 187070, 313702, 784255, 1568510, 2039063, 4078126, 10195315, 20390630]

約数ペア:

[(1, 20390630), (2, 10195315), (5, 4078126), (10, 2039063), (13, 1568510), (26, 784255), (65, 313702), (109, 187070), (130, 156851), (218, 93535), (545, 37414), (1090, 18707), (1417, 14390), (1439, 14170), (2834, 7195), (2878, 7085)]