20797603072

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251519}}^1$

素因数の和:251571

約数の個数: 72

約数和(自身を含む): 46269619200

約数和(自身を除く): 25472016128

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 128, 136, 152, 256, 272, 304, 323, 544, 608, 646, 1088, 1216, 1292, 2176, 2432, 2584, 4352, 4864, 5168, 10336, 20672, 41344, 82688, 251519, 503038, 1006076, 2012152, 4024304, 4275823, 4778861, 8048608, 8551646, 9557722, 16097216, 17103292, 19115444, 32194432, 34206584, 38230888, 64388864, 68413168, 76461776, 81240637, 136826336, 152923552, 162481274, 273652672, 305847104, 324962548, 547305344, 611694208, 649925096, 1094610688, 1223388416, 1299850192, 2599700384, 5199400768, 10398801536, 20797603072]

約数ペア:

[(1, 20797603072), (2, 10398801536), (4, 5199400768), (8, 2599700384), (16, 1299850192), (17, 1223388416), (19, 1094610688), (32, 649925096), (34, 611694208), (38, 547305344), (64, 324962548), (68, 305847104), (76, 273652672), (128, 162481274), (136, 152923552), (152, 136826336), (256, 81240637), (272, 76461776), (304, 68413168), (323, 64388864), (544, 38230888), (608, 34206584), (646, 32194432), (1088, 19115444), (1216, 17103292), (1292, 16097216), (2176, 9557722), (2432, 8551646), (2584, 8048608), (4352, 4778861), (4864, 4275823), (5168, 4024304), (10336, 2012152), (20672, 1006076), (41344, 503038), (82688, 251519)]