81511402

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:140

約数の個数: 72

約数和(自身を含む): 157281696

約数和(自身を除く): 75770294

約数列:

[1, 2, 7, 14, 23, 29, 43, 46, 49, 58, 86, 98, 161, 203, 301, 322, 406, 602, 667, 841, 989, 1127, 1247, 1334, 1421, 1682, 1978, 2107, 2254, 2494, 2842, 4214, 4669, 5887, 6923, 8729, 9338, 11774, 13846, 17458, 19343, 28681, 32683, 36163, 38686, 41209, 48461, 57362, 61103, 65366, 72326, 82418, 96922, 122206, 135401, 200767, 253141, 270802, 401534, 506282, 831749, 947807, 1405369, 1663498, 1771987, 1895614, 2810738, 3543974, 5822243, 11644486, 40755701, 81511402]

約数ペア:

[(1, 81511402), (2, 40755701), (7, 11644486), (14, 5822243), (23, 3543974), (29, 2810738), (43, 1895614), (46, 1771987), (49, 1663498), (58, 1405369), (86, 947807), (98, 831749), (161, 506282), (203, 401534), (301, 270802), (322, 253141), (406, 200767), (602, 135401), (667, 122206), (841, 96922), (989, 82418), (1127, 72326), (1247, 65366), (1334, 61103), (1421, 57362), (1682, 48461), (1978, 41209), (2107, 38686), (2254, 36163), (2494, 32683), (2842, 28681), (4214, 19343), (4669, 17458), (5887, 13846), (6923, 11774), (8729, 9338)]