18214340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 39481344

約数和(自身を除く): 21267004

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 127, 142, 202, 254, 284, 355, 404, 505, 508, 635, 710, 1010, 1270, 1420, 2020, 2540, 7171, 9017, 12827, 14342, 18034, 25654, 28684, 35855, 36068, 45085, 51308, 64135, 71710, 90170, 128270, 143420, 180340, 256540, 910717, 1821434, 3642868, 4553585, 9107170, 18214340]

約数ペア:

[(1, 18214340), (2, 9107170), (4, 4553585), (5, 3642868), (10, 1821434), (20, 910717), (71, 256540), (101, 180340), (127, 143420), (142, 128270), (202, 90170), (254, 71710), (284, 64135), (355, 51308), (404, 45085), (505, 36068), (508, 35855), (635, 28684), (710, 25654), (1010, 18034), (1270, 14342), (1420, 12827), (2020, 9017), (2540, 7171)]