21090430

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:420

約数の個数: 32

約数和(自身を含む): 38937024

約数和(自身を除く): 17846594

約数列:

[1, 2, 5, 10, 73, 146, 167, 173, 334, 346, 365, 730, 835, 865, 1670, 1730, 12191, 12629, 24382, 25258, 28891, 57782, 60955, 63145, 121910, 126290, 144455, 288910, 2109043, 4218086, 10545215, 21090430]

約数ペア:

[(1, 21090430), (2, 10545215), (5, 4218086), (10, 2109043), (73, 288910), (146, 144455), (167, 126290), (173, 121910), (334, 63145), (346, 60955), (365, 57782), (730, 28891), (835, 25258), (865, 24382), (1670, 12629), (1730, 12191)]