21342280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7309}}^1$

素因数の和:7393

約数の個数: 32

約数和(自身を含む): 48684600

約数和(自身を除く): 27342320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7309, 14618, 29236, 36545, 58472, 73090, 146180, 292360, 533557, 1067114, 2134228, 2667785, 4268456, 5335570, 10671140, 21342280]

約数ペア:

[(1, 21342280), (2, 10671140), (4, 5335570), (5, 4268456), (8, 2667785), (10, 2134228), (20, 1067114), (40, 533557), (73, 292360), (146, 146180), (292, 73090), (365, 58472), (584, 36545), (730, 29236), (1460, 14618), (2920, 7309)]