20802650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{347}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 42720480

約数和(自身を除く): 21917830

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 109, 110, 218, 275, 347, 545, 550, 694, 1090, 1199, 1735, 2398, 2725, 3470, 3817, 5450, 5995, 7634, 8675, 11990, 17350, 19085, 29975, 37823, 38170, 59950, 75646, 95425, 189115, 190850, 378230, 416053, 832106, 945575, 1891150, 2080265, 4160530, 10401325, 20802650]

約数ペア:

[(1, 20802650), (2, 10401325), (5, 4160530), (10, 2080265), (11, 1891150), (22, 945575), (25, 832106), (50, 416053), (55, 378230), (109, 190850), (110, 189115), (218, 95425), (275, 75646), (347, 59950), (545, 38170), (550, 37823), (694, 29975), (1090, 19085), (1199, 17350), (1735, 11990), (2398, 8675), (2725, 7634), (3470, 5995), (3817, 5450)]