20355328

素因数分解:

$2^8\times 7^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 47845952

約数和(自身を除く): 27490624

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 128, 148, 224, 256, 259, 296, 307, 448, 518, 592, 614, 896, 1036, 1184, 1228, 1792, 2072, 2149, 2368, 2456, 4144, 4298, 4736, 4912, 8288, 8596, 9472, 9824, 11359, 16576, 17192, 19648, 22718, 33152, 34384, 39296, 45436, 66304, 68768, 78592, 79513, 90872, 137536, 159026, 181744, 275072, 318052, 363488, 550144, 636104, 726976, 1272208, 1453952, 2544416, 2907904, 5088832, 10177664, 20355328]

約数ペア:

[(1, 20355328), (2, 10177664), (4, 5088832), (7, 2907904), (8, 2544416), (14, 1453952), (16, 1272208), (28, 726976), (32, 636104), (37, 550144), (56, 363488), (64, 318052), (74, 275072), (112, 181744), (128, 159026), (148, 137536), (224, 90872), (256, 79513), (259, 78592), (296, 68768), (307, 66304), (448, 45436), (518, 39296), (592, 34384), (614, 33152), (896, 22718), (1036, 19648), (1184, 17192), (1228, 16576), (1792, 11359), (2072, 9824), (2149, 9472), (2368, 8596), (2456, 8288), (4144, 4912), (4298, 4736)]