21256886

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{6997}}^1$

素因数の和:7044

約数の個数: 24

約数和(自身を含む): 38293056

約数和(自身を除く): 17036170

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 434, 1519, 3038, 6997, 13994, 48979, 97958, 216907, 342853, 433814, 685706, 1518349, 3036698, 10628443, 21256886]

約数ペア:

[(1, 21256886), (2, 10628443), (7, 3036698), (14, 1518349), (31, 685706), (49, 433814), (62, 342853), (98, 216907), (217, 97958), (434, 48979), (1519, 13994), (3038, 6997)]