639834

素因数分解:

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

素因数の和:662

約数の個数: 24

約数和(自身を含む): 1387872

約数和(自身を除く): 748038

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 169, 338, 507, 631, 1014, 1262, 1893, 3786, 8203, 16406, 24609, 49218, 106639, 213278, 319917, 639834]

約数ペア:

[(1, 639834), (2, 319917), (3, 213278), (6, 106639), (13, 49218), (26, 24609), (39, 16406), (78, 8203), (169, 3786), (338, 1893), (507, 1262), (631, 1014)]