20570768

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:615

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21747952

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 157, 304, 314, 431, 628, 862, 1256, 1724, 2512, 2983, 3448, 5966, 6896, 8189, 11932, 16378, 23864, 32756, 47728, 65512, 67667, 131024, 135334, 270668, 541336, 1082672, 1285673, 2571346, 5142692, 10285384, 20570768]

約数ペア:

[(1, 20570768), (2, 10285384), (4, 5142692), (8, 2571346), (16, 1285673), (19, 1082672), (38, 541336), (76, 270668), (152, 135334), (157, 131024), (304, 67667), (314, 65512), (431, 47728), (628, 32756), (862, 23864), (1256, 16378), (1724, 11932), (2512, 8189), (2983, 6896), (3448, 5966)]