21104570

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1031}}^1$

素因数の和:1150

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 19019590

約数列:

[1, 2, 5, 10, 23, 46, 89, 115, 178, 230, 445, 890, 1031, 2047, 2062, 4094, 5155, 10235, 10310, 20470, 23713, 47426, 91759, 118565, 183518, 237130, 458795, 917590, 2110457, 4220914, 10552285, 21104570]

約数ペア:

[(1, 21104570), (2, 10552285), (5, 4220914), (10, 2110457), (23, 917590), (46, 458795), (89, 237130), (115, 183518), (178, 118565), (230, 91759), (445, 47426), (890, 23713), (1031, 20470), (2047, 10310), (2062, 10235), (4094, 5155)]