20778835

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1741}}^1$

素因数の和:1795

約数の個数: 32

約数和(自身を含む): 32108544

約数和(自身を除く): 11329709

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 1741, 2387, 8705, 11935, 12187, 19151, 53971, 60935, 95755, 134057, 269855, 377797, 593681, 670285, 1888985, 2968405, 4155767, 20778835]

約数ペア:

[(1, 20778835), (5, 4155767), (7, 2968405), (11, 1888985), (31, 670285), (35, 593681), (55, 377797), (77, 269855), (155, 134057), (217, 95755), (341, 60935), (385, 53971), (1085, 19151), (1705, 12187), (1741, 11935), (2387, 8705)]