20834260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{503}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 25735340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 503, 545, 1006, 1090, 2012, 2071, 2180, 2515, 4142, 5030, 8284, 9557, 10060, 10355, 19114, 20710, 38228, 41420, 47785, 54827, 95570, 109654, 191140, 219308, 274135, 548270, 1041713, 1096540, 2083426, 4166852, 5208565, 10417130, 20834260]

約数ペア:

[(1, 20834260), (2, 10417130), (4, 5208565), (5, 4166852), (10, 2083426), (19, 1096540), (20, 1041713), (38, 548270), (76, 274135), (95, 219308), (109, 191140), (190, 109654), (218, 95570), (380, 54827), (436, 47785), (503, 41420), (545, 38228), (1006, 20710), (1090, 19114), (2012, 10355), (2071, 10060), (2180, 9557), (2515, 8284), (4142, 5030)]