19968840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55469}}^1$

素因数の和:55486

約数の個数: 48

約数和(自身を含む): 64899900

約数和(自身を除く): 44931060

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55469, 110938, 166407, 221876, 277345, 332814, 443752, 499221, 554690, 665628, 832035, 998442, 1109380, 1331256, 1664070, 1996884, 2218760, 2496105, 3328140, 3993768, 4992210, 6656280, 9984420, 19968840]

約数ペア:

[(1, 19968840), (2, 9984420), (3, 6656280), (4, 4992210), (5, 3993768), (6, 3328140), (8, 2496105), (9, 2218760), (10, 1996884), (12, 1664070), (15, 1331256), (18, 1109380), (20, 998442), (24, 832035), (30, 665628), (36, 554690), (40, 499221), (45, 443752), (60, 332814), (72, 277345), (90, 221876), (120, 166407), (180, 110938), (360, 55469)]