20928368

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:633

約数の個数: 40

約数和(自身を含む): 42299376

約数和(自身を除く): 21371008

約数列:

[1, 2, 4, 8, 16, 41, 61, 82, 122, 164, 244, 328, 488, 523, 656, 976, 1046, 2092, 2501, 4184, 5002, 8368, 10004, 20008, 21443, 31903, 40016, 42886, 63806, 85772, 127612, 171544, 255224, 343088, 510448, 1308023, 2616046, 5232092, 10464184, 20928368]

約数ペア:

[(1, 20928368), (2, 10464184), (4, 5232092), (8, 2616046), (16, 1308023), (41, 510448), (61, 343088), (82, 255224), (122, 171544), (164, 127612), (244, 85772), (328, 63806), (488, 42886), (523, 40016), (656, 31903), (976, 21443), (1046, 20008), (2092, 10004), (2501, 8368), (4184, 5002)]