21963980

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2621}}^1$

素因数の和:3049

約数の個数: 24

約数和(自身を含む): 46252080

約数和(自身を除く): 24288100

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 2621, 4190, 5242, 8380, 10484, 13105, 26210, 52420, 1098199, 2196398, 4392796, 5490995, 10981990, 21963980]

約数ペア:

[(1, 21963980), (2, 10981990), (4, 5490995), (5, 4392796), (10, 2196398), (20, 1098199), (419, 52420), (838, 26210), (1676, 13105), (2095, 10484), (2621, 8380), (4190, 5242)]