20911185

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3659}}^1$

素因数の和:3797

約数の個数: 24

約数和(自身を含む): 36541440

約数和(自身を除く): 15630255

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3659, 5715, 10977, 18295, 32931, 54885, 164655, 464693, 1394079, 2323465, 4182237, 6970395, 20911185]

約数ペア:

[(1, 20911185), (3, 6970395), (5, 4182237), (9, 2323465), (15, 1394079), (45, 464693), (127, 164655), (381, 54885), (635, 32931), (1143, 18295), (1905, 10977), (3659, 5715)]