21000446985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{464047}}^1$

素因数の和:464493

約数の個数: 32

約数和(自身を含む): 38489997312

約数和(自身を除く): 17489550327

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 431, 1293, 2155, 3017, 6465, 9051, 15085, 45255, 464047, 1392141, 2320235, 3248329, 6960705, 9744987, 16241645, 48724935, 200004257, 600012771, 1000021285, 1400029799, 3000063855, 4200089397, 7000148995, 21000446985]

約数ペア:

[(1, 21000446985), (3, 7000148995), (5, 4200089397), (7, 3000063855), (15, 1400029799), (21, 1000021285), (35, 600012771), (105, 200004257), (431, 48724935), (1293, 16241645), (2155, 9744987), (3017, 6960705), (6465, 3248329), (9051, 2320235), (15085, 1392141), (45255, 464047)]