281558238

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:849

約数の個数: 64

約数和(自身を含む): 626368512

約数和(自身を除く): 344810274

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 127, 129, 254, 258, 381, 559, 661, 762, 1118, 1322, 1651, 1677, 1983, 3302, 3354, 3966, 4953, 5461, 8593, 9906, 10922, 16383, 17186, 25779, 28423, 32766, 51558, 56846, 70993, 83947, 85269, 141986, 167894, 170538, 212979, 251841, 369499, 425958, 503682, 738998, 1091311, 1108497, 2182622, 2216994, 3273933, 3609721, 6547866, 7219442, 10829163, 21658326, 46926373, 93852746, 140779119, 281558238]

約数ペア:

[(1, 281558238), (2, 140779119), (3, 93852746), (6, 46926373), (13, 21658326), (26, 10829163), (39, 7219442), (43, 6547866), (78, 3609721), (86, 3273933), (127, 2216994), (129, 2182622), (254, 1108497), (258, 1091311), (381, 738998), (559, 503682), (661, 425958), (762, 369499), (1118, 251841), (1322, 212979), (1651, 170538), (1677, 167894), (1983, 141986), (3302, 85269), (3354, 83947), (3966, 70993), (4953, 56846), (5461, 51558), (8593, 32766), (9906, 28423), (10922, 25779), (16383, 17186)]