21384590

素因数分解:

$2^1\times 5^1\times {\mathrm{631}}^1\times {\mathrm{3389}}^1$

素因数の和:4027

約数の個数: 16

約数和(自身を含む): 38564640

約数和(自身を除く): 17180050

約数列:

[1, 2, 5, 10, 631, 1262, 3155, 3389, 6310, 6778, 16945, 33890, 2138459, 4276918, 10692295, 21384590]

約数ペア:

[(1, 21384590), (2, 10692295), (5, 4276918), (10, 2138459), (631, 33890), (1262, 16945), (3155, 6778), (3389, 6310)]