21617120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19301}}^1$

素因数の和:19323

約数の個数: 48

約数和(自身を含む): 58369248

約数和(自身を除く): 36752128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19301, 38602, 77204, 96505, 135107, 154408, 193010, 270214, 308816, 386020, 540428, 617632, 675535, 772040, 1080856, 1351070, 1544080, 2161712, 2702140, 3088160, 4323424, 5404280, 10808560, 21617120]

約数ペア:

[(1, 21617120), (2, 10808560), (4, 5404280), (5, 4323424), (7, 3088160), (8, 2702140), (10, 2161712), (14, 1544080), (16, 1351070), (20, 1080856), (28, 772040), (32, 675535), (35, 617632), (40, 540428), (56, 386020), (70, 308816), (80, 270214), (112, 193010), (140, 154408), (160, 135107), (224, 96505), (280, 77204), (560, 38602), (1120, 19301)]