21099381

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1192

約数の個数: 16

約数和(自身を含む): 28950528

約数和(自身を除く): 7851147

約数列:

[1, 3, 47, 141, 151, 453, 991, 2973, 7097, 21291, 46577, 139731, 149641, 448923, 7033127, 21099381]

約数ペア:

[(1, 21099381), (3, 7033127), (47, 448923), (141, 149641), (151, 139731), (453, 46577), (991, 21291), (2973, 7097)]