20806506

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4463}}^1$

素因数の和:4515

約数の個数: 48

約数和(自身を含む): 52925184

約数和(自身を除く): 32118678

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 37, 42, 63, 74, 111, 126, 222, 259, 333, 518, 666, 777, 1554, 2331, 4463, 4662, 8926, 13389, 26778, 31241, 40167, 62482, 80334, 93723, 165131, 187446, 281169, 330262, 495393, 562338, 990786, 1155917, 1486179, 2311834, 2972358, 3467751, 6935502, 10403253, 20806506]

約数ペア:

[(1, 20806506), (2, 10403253), (3, 6935502), (6, 3467751), (7, 2972358), (9, 2311834), (14, 1486179), (18, 1155917), (21, 990786), (37, 562338), (42, 495393), (63, 330262), (74, 281169), (111, 187446), (126, 165131), (222, 93723), (259, 80334), (333, 62482), (518, 40167), (666, 31241), (777, 26778), (1554, 13389), (2331, 8926), (4463, 4662)]