18294280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 25043960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 47, 74, 94, 148, 185, 188, 235, 263, 296, 370, 376, 470, 526, 740, 940, 1052, 1315, 1480, 1739, 1880, 2104, 2630, 3478, 5260, 6956, 8695, 9731, 10520, 12361, 13912, 17390, 19462, 24722, 34780, 38924, 48655, 49444, 61805, 69560, 77848, 97310, 98888, 123610, 194620, 247220, 389240, 457357, 494440, 914714, 1829428, 2286785, 3658856, 4573570, 9147140, 18294280]

約数ペア:

[(1, 18294280), (2, 9147140), (4, 4573570), (5, 3658856), (8, 2286785), (10, 1829428), (20, 914714), (37, 494440), (40, 457357), (47, 389240), (74, 247220), (94, 194620), (148, 123610), (185, 98888), (188, 97310), (235, 77848), (263, 69560), (296, 61805), (370, 49444), (376, 48655), (470, 38924), (526, 34780), (740, 24722), (940, 19462), (1052, 17390), (1315, 13912), (1480, 12361), (1739, 10520), (1880, 9731), (2104, 8695), (2630, 6956), (3478, 5260)]