81219440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1193}}^1$

素因数の和:1266

約数の個数: 80

約数和(自身を含む): 202540608

約数和(自身を除く): 121321168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 37, 40, 46, 74, 80, 92, 115, 148, 184, 185, 230, 296, 368, 370, 460, 592, 740, 851, 920, 1193, 1480, 1702, 1840, 2386, 2960, 3404, 4255, 4772, 5965, 6808, 8510, 9544, 11930, 13616, 17020, 19088, 23860, 27439, 34040, 44141, 47720, 54878, 68080, 88282, 95440, 109756, 137195, 176564, 219512, 220705, 274390, 353128, 439024, 441410, 548780, 706256, 882820, 1015243, 1097560, 1765640, 2030486, 2195120, 3531280, 4060972, 5076215, 8121944, 10152430, 16243888, 20304860, 40609720, 81219440]

約数ペア:

[(1, 81219440), (2, 40609720), (4, 20304860), (5, 16243888), (8, 10152430), (10, 8121944), (16, 5076215), (20, 4060972), (23, 3531280), (37, 2195120), (40, 2030486), (46, 1765640), (74, 1097560), (80, 1015243), (92, 882820), (115, 706256), (148, 548780), (184, 441410), (185, 439024), (230, 353128), (296, 274390), (368, 220705), (370, 219512), (460, 176564), (592, 137195), (740, 109756), (851, 95440), (920, 88282), (1193, 68080), (1480, 54878), (1702, 47720), (1840, 44141), (2386, 34040), (2960, 27439), (3404, 23860), (4255, 19088), (4772, 17020), (5965, 13616), (6808, 11930), (8510, 9544)]