19698987

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1609}}^1$

素因数の和:1683

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 13685973

約数列:

[1, 3, 7, 11, 21, 33, 53, 77, 159, 231, 371, 583, 1113, 1609, 1749, 4081, 4827, 11263, 12243, 17699, 33789, 53097, 85277, 123893, 255831, 371679, 596939, 938047, 1790817, 2814141, 6566329, 19698987]

約数ペア:

[(1, 19698987), (3, 6566329), (7, 2814141), (11, 1790817), (21, 938047), (33, 596939), (53, 371679), (77, 255831), (159, 123893), (231, 85277), (371, 53097), (583, 33789), (1113, 17699), (1609, 12243), (1749, 11263), (4081, 4827)]