20802780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115571}}^1$

素因数の和:115586

約数の個数: 36

約数和(自身を含む): 63102312

約数和(自身を除く): 42299532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115571, 231142, 346713, 462284, 577855, 693426, 1040139, 1155710, 1386852, 1733565, 2080278, 2311420, 3467130, 4160556, 5200695, 6934260, 10401390, 20802780]

約数ペア:

[(1, 20802780), (2, 10401390), (3, 6934260), (4, 5200695), (5, 4160556), (6, 3467130), (9, 2311420), (10, 2080278), (12, 1733565), (15, 1386852), (18, 1155710), (20, 1040139), (30, 693426), (36, 577855), (45, 462284), (60, 346713), (90, 231142), (180, 115571)]