20168820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16007}}^1$

素因数の和:16029

約数の個数: 72

約数和(自身を含む): 69922944

約数和(自身を除く): 49754124

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16007, 32014, 48021, 64028, 80035, 96042, 112049, 144063, 160070, 192084, 224098, 240105, 288126, 320140, 336147, 448196, 480210, 560245, 576252, 672294, 720315, 960420, 1008441, 1120490, 1344588, 1440630, 1680735, 2016882, 2240980, 2881260, 3361470, 4033764, 5042205, 6722940, 10084410, 20168820]

約数ペア:

[(1, 20168820), (2, 10084410), (3, 6722940), (4, 5042205), (5, 4033764), (6, 3361470), (7, 2881260), (9, 2240980), (10, 2016882), (12, 1680735), (14, 1440630), (15, 1344588), (18, 1120490), (20, 1008441), (21, 960420), (28, 720315), (30, 672294), (35, 576252), (36, 560245), (42, 480210), (45, 448196), (60, 336147), (63, 320140), (70, 288126), (84, 240105), (90, 224098), (105, 192084), (126, 160070), (140, 144063), (180, 112049), (210, 96042), (252, 80035), (315, 64028), (420, 48021), (630, 32014), (1260, 16007)]