19388080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:334

約数の個数: 80

約数和(自身を含む): 48371904

約数和(自身を除く): 28983824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 41, 46, 80, 82, 92, 115, 164, 184, 205, 230, 257, 328, 368, 410, 460, 514, 656, 820, 920, 943, 1028, 1285, 1640, 1840, 1886, 2056, 2570, 3280, 3772, 4112, 4715, 5140, 5911, 7544, 9430, 10280, 10537, 11822, 15088, 18860, 20560, 21074, 23644, 29555, 37720, 42148, 47288, 52685, 59110, 75440, 84296, 94576, 105370, 118220, 168592, 210740, 236440, 242351, 421480, 472880, 484702, 842960, 969404, 1211755, 1938808, 2423510, 3877616, 4847020, 9694040, 19388080]

約数ペア:

[(1, 19388080), (2, 9694040), (4, 4847020), (5, 3877616), (8, 2423510), (10, 1938808), (16, 1211755), (20, 969404), (23, 842960), (40, 484702), (41, 472880), (46, 421480), (80, 242351), (82, 236440), (92, 210740), (115, 168592), (164, 118220), (184, 105370), (205, 94576), (230, 84296), (257, 75440), (328, 59110), (368, 52685), (410, 47288), (460, 42148), (514, 37720), (656, 29555), (820, 23644), (920, 21074), (943, 20560), (1028, 18860), (1285, 15088), (1640, 11822), (1840, 10537), (1886, 10280), (2056, 9430), (2570, 7544), (3280, 5911), (3772, 5140), (4112, 4715)]