81019268

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{487}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 163968000

約数和(自身を除く): 82948732

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 199, 209, 398, 418, 487, 796, 836, 974, 1948, 2189, 3781, 4378, 5357, 7562, 8756, 9253, 10714, 15124, 18506, 21428, 37012, 41591, 83182, 96913, 101783, 166364, 193826, 203566, 387652, 407132, 1066043, 1841347, 2132086, 3682694, 4264172, 7365388, 20254817, 40509634, 81019268]

約数ペア:

[(1, 81019268), (2, 40509634), (4, 20254817), (11, 7365388), (19, 4264172), (22, 3682694), (38, 2132086), (44, 1841347), (76, 1066043), (199, 407132), (209, 387652), (398, 203566), (418, 193826), (487, 166364), (796, 101783), (836, 96913), (974, 83182), (1948, 41591), (2189, 37012), (3781, 21428), (4378, 18506), (5357, 15124), (7562, 10714), (8756, 9253)]