209212420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{5051}}^1$

素因数の和:5188

約数の個数: 48

約数和(自身を含む): 466804800

約数和(自身を除く): 257592380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1090, 2071, 2180, 4142, 5051, 8284, 10102, 10355, 20204, 20710, 25255, 41420, 50510, 95969, 101020, 191938, 383876, 479845, 550559, 959690, 1101118, 1919380, 2202236, 2752795, 5505590, 10460621, 11011180, 20921242, 41842484, 52303105, 104606210, 209212420]

約数ペア:

[(1, 209212420), (2, 104606210), (4, 52303105), (5, 41842484), (10, 20921242), (19, 11011180), (20, 10460621), (38, 5505590), (76, 2752795), (95, 2202236), (109, 1919380), (190, 1101118), (218, 959690), (380, 550559), (436, 479845), (545, 383876), (1090, 191938), (2071, 101020), (2180, 95969), (4142, 50510), (5051, 41420), (8284, 25255), (10102, 20710), (10355, 20204)]