18878584

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 20519816

約数列:

[1, 2, 4, 8, 23, 37, 46, 47, 59, 74, 92, 94, 118, 148, 184, 188, 236, 296, 376, 472, 851, 1081, 1357, 1702, 1739, 2162, 2183, 2714, 2773, 3404, 3478, 4324, 4366, 5428, 5546, 6808, 6956, 8648, 8732, 10856, 11092, 13912, 17464, 22184, 39997, 50209, 63779, 79994, 100418, 102601, 127558, 159988, 200836, 205202, 255116, 319976, 401672, 410404, 510232, 820808, 2359823, 4719646, 9439292, 18878584]

約数ペア:

[(1, 18878584), (2, 9439292), (4, 4719646), (8, 2359823), (23, 820808), (37, 510232), (46, 410404), (47, 401672), (59, 319976), (74, 255116), (92, 205202), (94, 200836), (118, 159988), (148, 127558), (184, 102601), (188, 100418), (236, 79994), (296, 63779), (376, 50209), (472, 39997), (851, 22184), (1081, 17464), (1357, 13912), (1702, 11092), (1739, 10856), (2162, 8732), (2183, 8648), (2714, 6956), (2773, 6808), (3404, 5546), (3478, 5428), (4324, 4366)]