21199557

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1\times {\mathrm{577}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 29168192

約数和(自身を除く): 7968635

約数列:

[1, 3, 37, 111, 331, 577, 993, 1731, 12247, 21349, 36741, 64047, 190987, 572961, 7066519, 21199557]

約数ペア:

[(1, 21199557), (3, 7066519), (37, 572961), (111, 190987), (331, 64047), (577, 36741), (993, 21349), (1731, 12247)]