2101520

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:363

約数の個数: 40

約数和(自身を含む): 4951320

約数和(自身を除く): 2849800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 241, 436, 482, 545, 872, 964, 1090, 1205, 1744, 1928, 2180, 2410, 3856, 4360, 4820, 8720, 9640, 19280, 26269, 52538, 105076, 131345, 210152, 262690, 420304, 525380, 1050760, 2101520]

約数ペア:

[(1, 2101520), (2, 1050760), (4, 525380), (5, 420304), (8, 262690), (10, 210152), (16, 131345), (20, 105076), (40, 52538), (80, 26269), (109, 19280), (218, 9640), (241, 8720), (436, 4820), (482, 4360), (545, 3856), (872, 2410), (964, 2180), (1090, 1928), (1205, 1744)]