20542832

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{499}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 41664000

約数和(自身を除く): 21121168

約数列:

[1, 2, 4, 8, 16, 31, 62, 83, 124, 166, 248, 332, 496, 499, 664, 998, 1328, 1996, 2573, 3992, 5146, 7984, 10292, 15469, 20584, 30938, 41168, 41417, 61876, 82834, 123752, 165668, 247504, 331336, 662672, 1283927, 2567854, 5135708, 10271416, 20542832]

約数ペア:

[(1, 20542832), (2, 10271416), (4, 5135708), (8, 2567854), (16, 1283927), (31, 662672), (62, 331336), (83, 247504), (124, 165668), (166, 123752), (248, 82834), (332, 61876), (496, 41417), (499, 41168), (664, 30938), (998, 20584), (1328, 15469), (1996, 10292), (2573, 7984), (3992, 5146)]