19786988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{3491}}^1$

素因数の和:3617

約数の個数: 24

約数和(自身を含む): 37643760

約数和(自身を除く): 17856772

約数列:

[1, 2, 4, 13, 26, 52, 109, 218, 436, 1417, 2834, 3491, 5668, 6982, 13964, 45383, 90766, 181532, 380519, 761038, 1522076, 4946747, 9893494, 19786988]

約数ペア:

[(1, 19786988), (2, 9893494), (4, 4946747), (13, 1522076), (26, 761038), (52, 380519), (109, 181532), (218, 90766), (436, 45383), (1417, 13964), (2834, 6982), (3491, 5668)]