20540312

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{631}}^1$

素因数の和:963

約数の個数: 32

約数和(自身を含む): 41674080

約数和(自身を除く): 21133768

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 313, 626, 631, 1252, 1262, 2504, 2524, 4069, 5048, 8138, 8203, 16276, 16406, 32552, 32812, 65624, 197503, 395006, 790012, 1580024, 2567539, 5135078, 10270156, 20540312]

約数ペア:

[(1, 20540312), (2, 10270156), (4, 5135078), (8, 2567539), (13, 1580024), (26, 790012), (52, 395006), (104, 197503), (313, 65624), (626, 32812), (631, 32552), (1252, 16406), (1262, 16276), (2504, 8203), (2524, 8138), (4069, 5048)]