21854248

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26045912

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 47, 52, 68, 94, 104, 136, 188, 221, 263, 376, 442, 526, 611, 799, 884, 1052, 1222, 1598, 1768, 2104, 2444, 3196, 3419, 4471, 4888, 6392, 6838, 8942, 10387, 12361, 13676, 17884, 20774, 24722, 27352, 35768, 41548, 49444, 58123, 83096, 98888, 116246, 160693, 210137, 232492, 321386, 420274, 464984, 642772, 840548, 1285544, 1681096, 2731781, 5463562, 10927124, 21854248]

約数ペア:

[(1, 21854248), (2, 10927124), (4, 5463562), (8, 2731781), (13, 1681096), (17, 1285544), (26, 840548), (34, 642772), (47, 464984), (52, 420274), (68, 321386), (94, 232492), (104, 210137), (136, 160693), (188, 116246), (221, 98888), (263, 83096), (376, 58123), (442, 49444), (526, 41548), (611, 35768), (799, 27352), (884, 24722), (1052, 20774), (1222, 17884), (1598, 13676), (1768, 12361), (2104, 10387), (2444, 8942), (3196, 6838), (3419, 6392), (4471, 4888)]