1665280

素因数分解:

$2^8\times 5^1\times {\mathrm{1301}}^1$

素因数の和:1322

約数の個数: 36

約数和(自身を含む): 3991932

約数和(自身を除く): 2326652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 1301, 2602, 5204, 6505, 10408, 13010, 20816, 26020, 41632, 52040, 83264, 104080, 166528, 208160, 333056, 416320, 832640, 1665280]

約数ペア:

[(1, 1665280), (2, 832640), (4, 416320), (5, 333056), (8, 208160), (10, 166528), (16, 104080), (20, 83264), (32, 52040), (40, 41632), (64, 26020), (80, 20816), (128, 13010), (160, 10408), (256, 6505), (320, 5204), (640, 2602), (1280, 1301)]