20384416

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2579}}^1$

素因数の和:2621

約数の個数: 48

約数和(自身を含む): 45511200

約数和(自身を除く): 25126784

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2579, 3952, 5158, 7904, 10316, 20632, 33527, 41264, 49001, 67054, 82528, 98002, 134108, 196004, 268216, 392008, 536432, 637013, 784016, 1072864, 1274026, 1568032, 2548052, 5096104, 10192208, 20384416]

約数ペア:

[(1, 20384416), (2, 10192208), (4, 5096104), (8, 2548052), (13, 1568032), (16, 1274026), (19, 1072864), (26, 784016), (32, 637013), (38, 536432), (52, 392008), (76, 268216), (104, 196004), (152, 134108), (208, 98002), (247, 82528), (304, 67054), (416, 49001), (494, 41264), (608, 33527), (988, 20632), (1976, 10316), (2579, 7904), (3952, 5158)]