20921937192009

素因数分解:

$3^6\times 7^2\times {\mathrm{173}}^1\times {\mathrm{3385573}}^1$

素因数の和:3385778

約数の個数: 84

約数和(自身を含む): 36700888364676

約数和(自身を除く): 15778951172667

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 173, 189, 243, 441, 519, 567, 729, 1211, 1323, 1557, 1701, 3633, 3969, 4671, 5103, 8477, 10899, 11907, 14013, 25431, 32697, 35721, 42039, 76293, 98091, 126117, 228879, 294273, 686637, 882819, 2059911, 3385573, 6179733, 10156719, 23699011, 30470157, 71097033, 91410471, 165893077, 213291099, 274231413, 497679231, 585704129, 639873297, 822694239, 1493037693, 1757112387, 1919619891, 2468082717, 4099928903, 4479113079, 5271337161, 5758859673, 12299786709, 13437339237, 15814011483, 17276579019, 28699502321, 36899360127, 40312017711, 47442034449, 86098506963, 110698080381, 120936053133, 142326103347, 258295520889, 332094241143, 426978310041, 774886562667, 996282723429, 2324659688001, 2988848170287, 6973979064003, 20921937192009]

約数ペア:

[(1, 20921937192009), (3, 6973979064003), (7, 2988848170287), (9, 2324659688001), (21, 996282723429), (27, 774886562667), (49, 426978310041), (63, 332094241143), (81, 258295520889), (147, 142326103347), (173, 120936053133), (189, 110698080381), (243, 86098506963), (441, 47442034449), (519, 40312017711), (567, 36899360127), (729, 28699502321), (1211, 17276579019), (1323, 15814011483), (1557, 13437339237), (1701, 12299786709), (3633, 5758859673), (3969, 5271337161), (4671, 4479113079), (5103, 4099928903), (8477, 2468082717), (10899, 1919619891), (11907, 1757112387), (14013, 1493037693), (25431, 822694239), (32697, 639873297), (35721, 585704129), (42039, 497679231), (76293, 274231413), (98091, 213291099), (126117, 165893077), (228879, 91410471), (294273, 71097033), (686637, 30470157), (882819, 23699011), (2059911, 10156719), (3385573, 6179733)]