19708821

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{877}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 31228704

約数和(自身を除く): 11519883

約数列:

[1, 3, 9, 11, 33, 99, 227, 681, 877, 2043, 2497, 2631, 7491, 7893, 9647, 22473, 28941, 86823, 199079, 597237, 1791711, 2189869, 6569607, 19708821]

約数ペア:

[(1, 19708821), (3, 6569607), (9, 2189869), (11, 1791711), (33, 597237), (99, 199079), (227, 86823), (681, 28941), (877, 22473), (2043, 9647), (2497, 7893), (2631, 7491)]