20653880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39719}}^1$

素因数の和:39743

約数の個数: 32

約数和(自身を含む): 50047200

約数和(自身を除く): 29393320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39719, 79438, 158876, 198595, 317752, 397190, 516347, 794380, 1032694, 1588760, 2065388, 2581735, 4130776, 5163470, 10326940, 20653880]

約数ペア:

[(1, 20653880), (2, 10326940), (4, 5163470), (5, 4130776), (8, 2581735), (10, 2065388), (13, 1588760), (20, 1032694), (26, 794380), (40, 516347), (52, 397190), (65, 317752), (104, 198595), (130, 158876), (260, 79438), (520, 39719)]