12020720

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 29998080

約数和(自身を除く): 17977360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 47, 80, 92, 94, 115, 139, 184, 188, 230, 235, 278, 368, 376, 460, 470, 556, 695, 752, 920, 940, 1081, 1112, 1390, 1840, 1880, 2162, 2224, 2780, 3197, 3760, 4324, 5405, 5560, 6394, 6533, 8648, 10810, 11120, 12788, 13066, 15985, 17296, 21620, 25576, 26132, 31970, 32665, 43240, 51152, 52264, 63940, 65330, 86480, 104528, 127880, 130660, 150259, 255760, 261320, 300518, 522640, 601036, 751295, 1202072, 1502590, 2404144, 3005180, 6010360, 12020720]

約数ペア:

[(1, 12020720), (2, 6010360), (4, 3005180), (5, 2404144), (8, 1502590), (10, 1202072), (16, 751295), (20, 601036), (23, 522640), (40, 300518), (46, 261320), (47, 255760), (80, 150259), (92, 130660), (94, 127880), (115, 104528), (139, 86480), (184, 65330), (188, 63940), (230, 52264), (235, 51152), (278, 43240), (368, 32665), (376, 31970), (460, 26132), (470, 25576), (556, 21620), (695, 17296), (752, 15985), (920, 13066), (940, 12788), (1081, 11120), (1112, 10810), (1390, 8648), (1840, 6533), (1880, 6394), (2162, 5560), (2224, 5405), (2780, 4324), (3197, 3760)]