20378808

素因数分解:

$2^3\times 3^2\times {\mathrm{349}}^1\times {\mathrm{811}}^1$

素因数の和:1172

約数の個数: 48

約数和(自身を含む): 55419000

約数和(自身を除く): 35040192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 349, 698, 811, 1047, 1396, 1622, 2094, 2433, 2792, 3141, 3244, 4188, 4866, 6282, 6488, 7299, 8376, 9732, 12564, 14598, 19464, 25128, 29196, 58392, 283039, 566078, 849117, 1132156, 1698234, 2264312, 2547351, 3396468, 5094702, 6792936, 10189404, 20378808]

約数ペア:

[(1, 20378808), (2, 10189404), (3, 6792936), (4, 5094702), (6, 3396468), (8, 2547351), (9, 2264312), (12, 1698234), (18, 1132156), (24, 849117), (36, 566078), (72, 283039), (349, 58392), (698, 29196), (811, 25128), (1047, 19464), (1396, 14598), (1622, 12564), (2094, 9732), (2433, 8376), (2792, 7299), (3141, 6488), (3244, 6282), (4188, 4866)]