20196979684

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{172441}}^1$

素因数の和:172588

約数の個数: 48

約数和(自身を含む): 41717168640

約数和(自身を除く): 21520188956

約数列:

[1, 2, 4, 7, 14, 28, 47, 89, 94, 178, 188, 329, 356, 623, 658, 1246, 1316, 2492, 4183, 8366, 16732, 29281, 58562, 117124, 172441, 344882, 689764, 1207087, 2414174, 4828348, 8104727, 15347249, 16209454, 30694498, 32418908, 56733089, 61388996, 107430743, 113466178, 214861486, 226932356, 429722972, 721320703, 1442641406, 2885282812, 5049244921, 10098489842, 20196979684]

約数ペア:

[(1, 20196979684), (2, 10098489842), (4, 5049244921), (7, 2885282812), (14, 1442641406), (28, 721320703), (47, 429722972), (89, 226932356), (94, 214861486), (178, 113466178), (188, 107430743), (329, 61388996), (356, 56733089), (623, 32418908), (658, 30694498), (1246, 16209454), (1316, 15347249), (2492, 8104727), (4183, 4828348), (8366, 2414174), (16732, 1207087), (29281, 689764), (58562, 344882), (117124, 172441)]