18944920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7069}}^1$

素因数の和:7147

約数の個数: 32

約数和(自身を含む): 43268400

約数和(自身を除く): 24323480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7069, 14138, 28276, 35345, 56552, 70690, 141380, 282760, 473623, 947246, 1894492, 2368115, 3788984, 4736230, 9472460, 18944920]

約数ペア:

[(1, 18944920), (2, 9472460), (4, 4736230), (5, 3788984), (8, 2368115), (10, 1894492), (20, 947246), (40, 473623), (67, 282760), (134, 141380), (268, 70690), (335, 56552), (536, 35345), (670, 28276), (1340, 14138), (2680, 7069)]