21746590

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:468

約数の個数: 32

約数和(自身を含む): 40201920

約数和(自身を除く): 18455330

約数列:

[1, 2, 5, 10, 71, 109, 142, 218, 281, 355, 545, 562, 710, 1090, 1405, 2810, 7739, 15478, 19951, 30629, 38695, 39902, 61258, 77390, 99755, 153145, 199510, 306290, 2174659, 4349318, 10873295, 21746590]

約数ペア:

[(1, 21746590), (2, 10873295), (5, 4349318), (10, 2174659), (71, 306290), (109, 199510), (142, 153145), (218, 99755), (281, 77390), (355, 61258), (545, 39902), (562, 38695), (710, 30629), (1090, 19951), (1405, 15478), (2810, 7739)]