18872984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2039}}^1$

素因数の和:2147

約数の個数: 32

約数和(自身を含む): 38556000

約数和(自身を除く): 19683016

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2039, 2314, 4078, 4628, 8156, 9256, 16312, 26507, 53014, 106028, 181471, 212056, 362942, 725884, 1451768, 2359123, 4718246, 9436492, 18872984]

約数ペア:

[(1, 18872984), (2, 9436492), (4, 4718246), (8, 2359123), (13, 1451768), (26, 725884), (52, 362942), (89, 212056), (104, 181471), (178, 106028), (356, 53014), (712, 26507), (1157, 16312), (2039, 9256), (2314, 8156), (4078, 4628)]