1990997384

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{83431}}^1$

素因数の和:83613

約数の個数: 32

約数和(自身を含む): 3954676800

約数和(自身を除く): 1963679416

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 157, 314, 628, 1256, 2983, 5966, 11932, 23864, 83431, 166862, 333724, 667448, 1585189, 3170378, 6340756, 12681512, 13098667, 26197334, 52394668, 104789336, 248874673, 497749346, 995498692, 1990997384]

約数ペア:

[(1, 1990997384), (2, 995498692), (4, 497749346), (8, 248874673), (19, 104789336), (38, 52394668), (76, 26197334), (152, 13098667), (157, 12681512), (314, 6340756), (628, 3170378), (1256, 1585189), (2983, 667448), (5966, 333724), (11932, 166862), (23864, 83431)]