19851884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 40078080

約数和(自身を除く): 20226196

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 71, 76, 142, 247, 283, 284, 494, 566, 923, 988, 1132, 1349, 1846, 2698, 3679, 3692, 5377, 5396, 7358, 10754, 14716, 17537, 20093, 21508, 35074, 40186, 69901, 70148, 80372, 139802, 261209, 279604, 381767, 522418, 763534, 1044836, 1527068, 4962971, 9925942, 19851884]

約数ペア:

[(1, 19851884), (2, 9925942), (4, 4962971), (13, 1527068), (19, 1044836), (26, 763534), (38, 522418), (52, 381767), (71, 279604), (76, 261209), (142, 139802), (247, 80372), (283, 70148), (284, 69901), (494, 40186), (566, 35074), (923, 21508), (988, 20093), (1132, 17537), (1349, 14716), (1846, 10754), (2698, 7358), (3679, 5396), (3692, 5377)]