20278216

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{11681}}^1$

素因数の和:11725

約数の個数: 32

約数和(自身を含む): 44858880

約数和(自身を除く): 24580664

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 11681, 23362, 46724, 81767, 93448, 163534, 327068, 362111, 654136, 724222, 1448444, 2534777, 2896888, 5069554, 10139108, 20278216]

約数ペア:

[(1, 20278216), (2, 10139108), (4, 5069554), (7, 2896888), (8, 2534777), (14, 1448444), (28, 724222), (31, 654136), (56, 362111), (62, 327068), (124, 163534), (217, 93448), (248, 81767), (434, 46724), (868, 23362), (1736, 11681)]