20896540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21323}}^1$

素因数の和:21346

約数の個数: 36

約数和(自身を含む): 51049656

約数和(自身を除く): 30153116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21323, 42646, 85292, 106615, 149261, 213230, 298522, 426460, 597044, 746305, 1044827, 1492610, 2089654, 2985220, 4179308, 5224135, 10448270, 20896540]

約数ペア:

[(1, 20896540), (2, 10448270), (4, 5224135), (5, 4179308), (7, 2985220), (10, 2089654), (14, 1492610), (20, 1044827), (28, 746305), (35, 597044), (49, 426460), (70, 298522), (98, 213230), (140, 149261), (196, 106615), (245, 85292), (490, 42646), (980, 21323)]