20411220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20011}}^1$

素因数の和:20040

約数の個数: 48

約数和(自身を含む): 60516288

約数和(自身を除く): 40105068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20011, 40022, 60033, 80044, 100055, 120066, 200110, 240132, 300165, 340187, 400220, 600330, 680374, 1020561, 1200660, 1360748, 1700935, 2041122, 3401870, 4082244, 5102805, 6803740, 10205610, 20411220]

約数ペア:

[(1, 20411220), (2, 10205610), (3, 6803740), (4, 5102805), (5, 4082244), (6, 3401870), (10, 2041122), (12, 1700935), (15, 1360748), (17, 1200660), (20, 1020561), (30, 680374), (34, 600330), (51, 400220), (60, 340187), (68, 300165), (85, 240132), (102, 200110), (170, 120066), (204, 100055), (255, 80044), (340, 60033), (510, 40022), (1020, 20011)]