2637640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 6428160

約数和(自身を除く): 3790520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 61, 92, 94, 115, 122, 184, 188, 230, 235, 244, 305, 376, 460, 470, 488, 610, 920, 940, 1081, 1220, 1403, 1880, 2162, 2440, 2806, 2867, 4324, 5405, 5612, 5734, 7015, 8648, 10810, 11224, 11468, 14030, 14335, 21620, 22936, 28060, 28670, 43240, 56120, 57340, 65941, 114680, 131882, 263764, 329705, 527528, 659410, 1318820, 2637640]

約数ペア:

[(1, 2637640), (2, 1318820), (4, 659410), (5, 527528), (8, 329705), (10, 263764), (20, 131882), (23, 114680), (40, 65941), (46, 57340), (47, 56120), (61, 43240), (92, 28670), (94, 28060), (115, 22936), (122, 21620), (184, 14335), (188, 14030), (230, 11468), (235, 11224), (244, 10810), (305, 8648), (376, 7015), (460, 5734), (470, 5612), (488, 5405), (610, 4324), (920, 2867), (940, 2806), (1081, 2440), (1220, 2162), (1403, 1880)]