20747090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3257}}^1$

素因数の和:3291

約数の個数: 48

約数和(自身を含む): 46797912

約数和(自身を除く): 26050822

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3257, 6370, 6514, 16285, 22799, 32570, 42341, 45598, 84682, 113995, 159593, 211705, 227990, 296387, 319186, 423410, 592774, 797965, 1481935, 1595930, 2074709, 2963870, 4149418, 10373545, 20747090]

約数ペア:

[(1, 20747090), (2, 10373545), (5, 4149418), (7, 2963870), (10, 2074709), (13, 1595930), (14, 1481935), (26, 797965), (35, 592774), (49, 423410), (65, 319186), (70, 296387), (91, 227990), (98, 211705), (130, 159593), (182, 113995), (245, 84682), (455, 45598), (490, 42341), (637, 32570), (910, 22799), (1274, 16285), (3185, 6514), (3257, 6370)]