21498890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{733}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 44392320

約数和(自身を除く): 22893430

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 419, 733, 838, 1466, 2095, 2933, 3665, 4190, 5131, 5866, 7330, 10262, 14665, 25655, 29330, 51310, 307127, 614254, 1535635, 2149889, 3071270, 4299778, 10749445, 21498890]

約数ペア:

[(1, 21498890), (2, 10749445), (5, 4299778), (7, 3071270), (10, 2149889), (14, 1535635), (35, 614254), (70, 307127), (419, 51310), (733, 29330), (838, 25655), (1466, 14665), (2095, 10262), (2933, 7330), (3665, 5866), (4190, 5131)]