20427540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2861}}^1$

素因数の和:2897

約数の個数: 96

約数和(自身を含む): 69237504

約数和(自身を除く): 48809964

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 340, 357, 420, 476, 510, 595, 714, 1020, 1190, 1428, 1785, 2380, 2861, 3570, 5722, 7140, 8583, 11444, 14305, 17166, 20027, 28610, 34332, 40054, 42915, 48637, 57220, 60081, 80108, 85830, 97274, 100135, 120162, 145911, 171660, 194548, 200270, 240324, 243185, 291822, 300405, 340459, 400540, 486370, 583644, 600810, 680918, 729555, 972740, 1021377, 1201620, 1361836, 1459110, 1702295, 2042754, 2918220, 3404590, 4085508, 5106885, 6809180, 10213770, 20427540]

約数ペア:

[(1, 20427540), (2, 10213770), (3, 6809180), (4, 5106885), (5, 4085508), (6, 3404590), (7, 2918220), (10, 2042754), (12, 1702295), (14, 1459110), (15, 1361836), (17, 1201620), (20, 1021377), (21, 972740), (28, 729555), (30, 680918), (34, 600810), (35, 583644), (42, 486370), (51, 400540), (60, 340459), (68, 300405), (70, 291822), (84, 243185), (85, 240324), (102, 200270), (105, 194548), (119, 171660), (140, 145911), (170, 120162), (204, 100135), (210, 97274), (238, 85830), (255, 80108), (340, 60081), (357, 57220), (420, 48637), (476, 42915), (510, 40054), (595, 34332), (714, 28610), (1020, 20027), (1190, 17166), (1428, 14305), (1785, 11444), (2380, 8583), (2861, 7140), (3570, 5722)]