21394306

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:238

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13073534

約数列:

[1, 2, 43, 47, 67, 79, 86, 94, 134, 158, 2021, 2881, 3149, 3397, 3713, 4042, 5293, 5762, 6298, 6794, 7426, 10586, 135407, 159659, 227599, 248771, 270814, 319318, 455198, 497542, 10697153, 21394306]

約数ペア:

[(1, 21394306), (2, 10697153), (43, 497542), (47, 455198), (67, 319318), (79, 270814), (86, 248771), (94, 227599), (134, 159659), (158, 135407), (2021, 10586), (2881, 7426), (3149, 6794), (3397, 6298), (3713, 5762), (4042, 5293)]