21582380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{293}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25833940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 127, 145, 254, 290, 293, 508, 580, 586, 635, 1172, 1270, 1465, 2540, 2930, 3683, 5860, 7366, 8497, 14732, 16994, 18415, 33988, 36830, 37211, 42485, 73660, 74422, 84970, 148844, 169940, 186055, 372110, 744220, 1079119, 2158238, 4316476, 5395595, 10791190, 21582380]

約数ペア:

[(1, 21582380), (2, 10791190), (4, 5395595), (5, 4316476), (10, 2158238), (20, 1079119), (29, 744220), (58, 372110), (116, 186055), (127, 169940), (145, 148844), (254, 84970), (290, 74422), (293, 73660), (508, 42485), (580, 37211), (586, 36830), (635, 33988), (1172, 18415), (1270, 16994), (1465, 14732), (2540, 8497), (2930, 7366), (3683, 5860)]