20974700

素因数分解:

$2^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1531}}^1$

素因数の和:1682

約数の個数: 36

約数和(自身を含む): 45877272

約数和(自身を除く): 24902572

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 137, 274, 548, 685, 1370, 1531, 2740, 3062, 3425, 6124, 6850, 7655, 13700, 15310, 30620, 38275, 76550, 153100, 209747, 419494, 838988, 1048735, 2097470, 4194940, 5243675, 10487350, 20974700]

約数ペア:

[(1, 20974700), (2, 10487350), (4, 5243675), (5, 4194940), (10, 2097470), (20, 1048735), (25, 838988), (50, 419494), (100, 209747), (137, 153100), (274, 76550), (548, 38275), (685, 30620), (1370, 15310), (1531, 13700), (2740, 7655), (3062, 6850), (3425, 6124)]