20971040

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2473}}^1$

素因数の和:2541

約数の個数: 48

約数和(自身を含む): 50499288

約数和(自身を除く): 29528248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2473, 4240, 4946, 8480, 9892, 12365, 19784, 24730, 39568, 49460, 79136, 98920, 131069, 197840, 262138, 395680, 524276, 655345, 1048552, 1310690, 2097104, 2621380, 4194208, 5242760, 10485520, 20971040]

約数ペア:

[(1, 20971040), (2, 10485520), (4, 5242760), (5, 4194208), (8, 2621380), (10, 2097104), (16, 1310690), (20, 1048552), (32, 655345), (40, 524276), (53, 395680), (80, 262138), (106, 197840), (160, 131069), (212, 98920), (265, 79136), (424, 49460), (530, 39568), (848, 24730), (1060, 19784), (1696, 12365), (2120, 9892), (2473, 8480), (4240, 4946)]