21841768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2039}}^1$

素因数の和:2161

約数の個数: 32

約数和(自身を含む): 44553600

約数和(自身を除く): 22711832

約数列:

[1, 2, 4, 8, 13, 26, 52, 103, 104, 206, 412, 824, 1339, 2039, 2678, 4078, 5356, 8156, 10712, 16312, 26507, 53014, 106028, 210017, 212056, 420034, 840068, 1680136, 2730221, 5460442, 10920884, 21841768]

約数ペア:

[(1, 21841768), (2, 10920884), (4, 5460442), (8, 2730221), (13, 1680136), (26, 840068), (52, 420034), (103, 212056), (104, 210017), (206, 106028), (412, 53014), (824, 26507), (1339, 16312), (2039, 10712), (2678, 8156), (4078, 5356)]