18654220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5519}}^1$

素因数の和:5554

約数の個数: 36

約数和(自身を含む): 42426720

約数和(自身を除く): 23772500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5519, 11038, 22076, 27595, 55190, 71747, 110380, 143494, 286988, 358735, 717470, 932711, 1434940, 1865422, 3730844, 4663555, 9327110, 18654220]

約数ペア:

[(1, 18654220), (2, 9327110), (4, 4663555), (5, 3730844), (10, 1865422), (13, 1434940), (20, 932711), (26, 717470), (52, 358735), (65, 286988), (130, 143494), (169, 110380), (260, 71747), (338, 55190), (676, 27595), (845, 22076), (1690, 11038), (3380, 5519)]