21213056

素因数分解:

$2^7\times {\mathrm{103}}^1\times {\mathrm{1609}}^1$

素因数の和:1726

約数の個数: 32

約数和(自身を含む): 42697200

約数和(自身を除く): 21484144

約数列:

[1, 2, 4, 8, 16, 32, 64, 103, 128, 206, 412, 824, 1609, 1648, 3218, 3296, 6436, 6592, 12872, 13184, 25744, 51488, 102976, 165727, 205952, 331454, 662908, 1325816, 2651632, 5303264, 10606528, 21213056]

約数ペア:

[(1, 21213056), (2, 10606528), (4, 5303264), (8, 2651632), (16, 1325816), (32, 662908), (64, 331454), (103, 205952), (128, 165727), (206, 102976), (412, 51488), (824, 25744), (1609, 13184), (1648, 12872), (3218, 6592), (3296, 6436)]