19981210

素因数分解:

$2^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{2203}}^1$

素因数の和:3117

約数の個数: 16

約数和(自身を含む): 36022176

約数和(自身を除く): 16040966

約数列:

[1, 2, 5, 10, 907, 1814, 2203, 4406, 4535, 9070, 11015, 22030, 1998121, 3996242, 9990605, 19981210]

約数ペア:

[(1, 19981210), (2, 9990605), (5, 3996242), (10, 1998121), (907, 22030), (1814, 11015), (2203, 9070), (4406, 4535)]