20028987

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{659}}^1$

素因数の和:983

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 11682693

約数列:

[1, 3, 9, 11, 33, 99, 307, 659, 921, 1977, 2763, 3377, 5931, 7249, 10131, 21747, 30393, 65241, 202313, 606939, 1820817, 2225443, 6676329, 20028987]

約数ペア:

[(1, 20028987), (3, 6676329), (9, 2225443), (11, 1820817), (33, 606939), (99, 202313), (307, 65241), (659, 30393), (921, 21747), (1977, 10131), (2763, 7249), (3377, 5931)]