21385209

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{373}}^1\times {\mathrm{659}}^1$

素因数の和:1064

約数の個数: 16

約数和(自身を含む): 29620800

約数和(自身を除く): 8235591

約数列:

[1, 3, 29, 87, 373, 659, 1119, 1977, 10817, 19111, 32451, 57333, 245807, 737421, 7128403, 21385209]

約数ペア:

[(1, 21385209), (3, 7128403), (29, 737421), (87, 245807), (373, 57333), (659, 32451), (1119, 19111), (1977, 10817)]