2177840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3889}}^1$

素因数の和:3909

約数の個数: 40

約数和(自身を含む): 5788320

約数和(自身を除く): 3610480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3889, 7778, 15556, 19445, 27223, 31112, 38890, 54446, 62224, 77780, 108892, 136115, 155560, 217784, 272230, 311120, 435568, 544460, 1088920, 2177840]

約数ペア:

[(1, 2177840), (2, 1088920), (4, 544460), (5, 435568), (7, 311120), (8, 272230), (10, 217784), (14, 155560), (16, 136115), (20, 108892), (28, 77780), (35, 62224), (40, 54446), (56, 38890), (70, 31112), (80, 27223), (112, 19445), (140, 15556), (280, 7778), (560, 3889)]