20171723180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1259}}^1\times {\mathrm{16349}}^1$

素因数の和:17631

約数の個数: 72

約数和(自身を含む): 49318794000

約数和(自身を除く): 29147070820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1259, 2518, 5036, 6295, 8813, 12590, 16349, 17626, 25180, 32698, 35252, 44065, 61691, 65396, 81745, 88130, 114443, 123382, 163490, 176260, 228886, 246764, 308455, 326980, 457772, 572215, 616910, 801101, 1144430, 1233820, 1602202, 2288860, 3204404, 4005505, 8011010, 16022020, 20583391, 41166782, 82333564, 102916955, 144083737, 205833910, 288167474, 411667820, 576334948, 720418685, 1008586159, 1440837370, 2017172318, 2881674740, 4034344636, 5042930795, 10085861590, 20171723180]

約数ペア:

[(1, 20171723180), (2, 10085861590), (4, 5042930795), (5, 4034344636), (7, 2881674740), (10, 2017172318), (14, 1440837370), (20, 1008586159), (28, 720418685), (35, 576334948), (49, 411667820), (70, 288167474), (98, 205833910), (140, 144083737), (196, 102916955), (245, 82333564), (490, 41166782), (980, 20583391), (1259, 16022020), (2518, 8011010), (5036, 4005505), (6295, 3204404), (8813, 2288860), (12590, 1602202), (16349, 1233820), (17626, 1144430), (25180, 801101), (32698, 616910), (35252, 572215), (44065, 457772), (61691, 326980), (65396, 308455), (81745, 246764), (88130, 228886), (114443, 176260), (123382, 163490)]