21013935

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{727}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 35223552

約数和(自身を除く): 14209617

約数列:

[1, 3, 5, 15, 41, 47, 123, 141, 205, 235, 615, 705, 727, 1927, 2181, 3635, 5781, 9635, 10905, 28905, 29807, 34169, 89421, 102507, 149035, 170845, 447105, 512535, 1400929, 4202787, 7004645, 21013935]

約数ペア:

[(1, 21013935), (3, 7004645), (5, 4202787), (15, 1400929), (41, 512535), (47, 447105), (123, 170845), (141, 149035), (205, 102507), (235, 89421), (615, 34169), (705, 29807), (727, 28905), (1927, 10905), (2181, 9635), (3635, 5781)]