1640356720

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{280883}}^1$

素因数の和:280969

約数の個数: 40

約数和(自身を含む): 3866087376

約数和(自身を除く): 2225730656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 280883, 561766, 1123532, 1404415, 2247064, 2808830, 4494128, 5617660, 11235320, 20504459, 22470640, 41008918, 82017836, 102522295, 164035672, 205044590, 328071344, 410089180, 820178360, 1640356720]

約数ペア:

[(1, 1640356720), (2, 820178360), (4, 410089180), (5, 328071344), (8, 205044590), (10, 164035672), (16, 102522295), (20, 82017836), (40, 41008918), (73, 22470640), (80, 20504459), (146, 11235320), (292, 5617660), (365, 4494128), (584, 2808830), (730, 2247064), (1168, 1404415), (1460, 1123532), (2920, 561766), (5840, 280883)]