4815020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 11682048

約数和(自身を除く): 6867028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 211, 326, 422, 652, 815, 844, 1055, 1141, 1477, 1630, 2110, 2282, 2954, 3260, 4220, 4564, 5705, 5908, 7385, 11410, 14770, 22820, 29540, 34393, 68786, 137572, 171965, 240751, 343930, 481502, 687860, 963004, 1203755, 2407510, 4815020]

約数ペア:

[(1, 4815020), (2, 2407510), (4, 1203755), (5, 963004), (7, 687860), (10, 481502), (14, 343930), (20, 240751), (28, 171965), (35, 137572), (70, 68786), (140, 34393), (163, 29540), (211, 22820), (326, 14770), (422, 11410), (652, 7385), (815, 5908), (844, 5705), (1055, 4564), (1141, 4220), (1477, 3260), (1630, 2954), (2110, 2282)]