21095655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6481}}^1$

素因数の和:6527

約数の個数: 32

約数和(自身を含む): 39825408

約数和(自身を除く): 18729753

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6481, 19443, 32405, 45367, 97215, 136101, 200911, 226835, 602733, 680505, 1004555, 1406377, 3013665, 4219131, 7031885, 21095655]

約数ペア:

[(1, 21095655), (3, 7031885), (5, 4219131), (7, 3013665), (15, 1406377), (21, 1004555), (31, 680505), (35, 602733), (93, 226835), (105, 200911), (155, 136101), (217, 97215), (465, 45367), (651, 32405), (1085, 19443), (3255, 6481)]