21354630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{397}}^1$

素因数の和:581

約数の個数: 64

約数和(自身を含む): 56395008

約数和(自身を除く): 35040378

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 163, 165, 326, 330, 397, 489, 794, 815, 978, 1191, 1630, 1793, 1985, 2382, 2445, 3586, 3970, 4367, 4890, 5379, 5955, 8734, 8965, 10758, 11910, 13101, 17930, 21835, 26202, 26895, 43670, 53790, 64711, 65505, 129422, 131010, 194133, 323555, 388266, 647110, 711821, 970665, 1423642, 1941330, 2135463, 3559105, 4270926, 7118210, 10677315, 21354630]

約数ペア:

[(1, 21354630), (2, 10677315), (3, 7118210), (5, 4270926), (6, 3559105), (10, 2135463), (11, 1941330), (15, 1423642), (22, 970665), (30, 711821), (33, 647110), (55, 388266), (66, 323555), (110, 194133), (163, 131010), (165, 129422), (326, 65505), (330, 64711), (397, 53790), (489, 43670), (794, 26895), (815, 26202), (978, 21835), (1191, 17930), (1630, 13101), (1793, 11910), (1985, 10758), (2382, 8965), (2445, 8734), (3586, 5955), (3970, 5379), (4367, 4890)]