19968940

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{1613}}^1$

素因数の和:2241

約数の個数: 24

約数和(自身を含む): 42028560

約数和(自身を除く): 22059620

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 1613, 2476, 3095, 3226, 6190, 6452, 8065, 12380, 16130, 32260, 998447, 1996894, 3993788, 4992235, 9984470, 19968940]

約数ペア:

[(1, 19968940), (2, 9984470), (4, 4992235), (5, 3993788), (10, 1996894), (20, 998447), (619, 32260), (1238, 16130), (1613, 12380), (2476, 8065), (3095, 6452), (3226, 6190)]