20152540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{293}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 44946720

約数和(自身を除く): 24794180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 293, 362, 380, 586, 724, 905, 1172, 1465, 1810, 2930, 3439, 3620, 5567, 5860, 6878, 11134, 13756, 17195, 22268, 27835, 34390, 53033, 55670, 68780, 106066, 111340, 212132, 265165, 530330, 1007627, 1060660, 2015254, 4030508, 5038135, 10076270, 20152540]

約数ペア:

[(1, 20152540), (2, 10076270), (4, 5038135), (5, 4030508), (10, 2015254), (19, 1060660), (20, 1007627), (38, 530330), (76, 265165), (95, 212132), (181, 111340), (190, 106066), (293, 68780), (362, 55670), (380, 53033), (586, 34390), (724, 27835), (905, 22268), (1172, 17195), (1465, 13756), (1810, 11134), (2930, 6878), (3439, 5860), (3620, 5567)]