20103965

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2647}}^1$

素因数の和:2697

約数の個数: 24

約数和(自身を含む): 28979712

約数和(自身を除く): 8875747

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2647, 7595, 13235, 18529, 82057, 92645, 129703, 410285, 574399, 648515, 2871995, 4020793, 20103965]

約数ペア:

[(1, 20103965), (5, 4020793), (7, 2871995), (31, 648515), (35, 574399), (49, 410285), (155, 129703), (217, 92645), (245, 82057), (1085, 18529), (1519, 13235), (2647, 7595)]