17987840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 49448448

約数和(自身を除く): 31460608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 47, 52, 64, 65, 80, 92, 94, 104, 115, 128, 130, 160, 184, 188, 208, 230, 235, 256, 260, 299, 320, 368, 376, 416, 460, 470, 520, 598, 611, 640, 736, 752, 832, 920, 940, 1040, 1081, 1196, 1222, 1280, 1472, 1495, 1504, 1664, 1840, 1880, 2080, 2162, 2392, 2444, 2944, 2990, 3008, 3055, 3328, 3680, 3760, 4160, 4324, 4784, 4888, 5405, 5888, 5980, 6016, 6110, 7360, 7520, 8320, 8648, 9568, 9776, 10810, 11960, 12032, 12220, 14053, 14720, 15040, 16640, 17296, 19136, 19552, 21620, 23920, 24440, 28106, 29440, 30080, 34592, 38272, 39104, 43240, 47840, 48880, 56212, 60160, 69184, 70265, 76544, 78208, 86480, 95680, 97760, 112424, 138368, 140530, 156416, 172960, 191360, 195520, 224848, 276736, 281060, 345920, 382720, 391040, 449696, 562120, 691840, 782080, 899392, 1124240, 1383680, 1798784, 2248480, 3597568, 4496960, 8993920, 17987840]

約数ペア:

[(1, 17987840), (2, 8993920), (4, 4496960), (5, 3597568), (8, 2248480), (10, 1798784), (13, 1383680), (16, 1124240), (20, 899392), (23, 782080), (26, 691840), (32, 562120), (40, 449696), (46, 391040), (47, 382720), (52, 345920), (64, 281060), (65, 276736), (80, 224848), (92, 195520), (94, 191360), (104, 172960), (115, 156416), (128, 140530), (130, 138368), (160, 112424), (184, 97760), (188, 95680), (208, 86480), (230, 78208), (235, 76544), (256, 70265), (260, 69184), (299, 60160), (320, 56212), (368, 48880), (376, 47840), (416, 43240), (460, 39104), (470, 38272), (520, 34592), (598, 30080), (611, 29440), (640, 28106), (736, 24440), (752, 23920), (832, 21620), (920, 19552), (940, 19136), (1040, 17296), (1081, 16640), (1196, 15040), (1222, 14720), (1280, 14053), (1472, 12220), (1495, 12032), (1504, 11960), (1664, 10810), (1840, 9776), (1880, 9568), (2080, 8648), (2162, 8320), (2392, 7520), (2444, 7360), (2944, 6110), (2990, 6016), (3008, 5980), (3055, 5888), (3328, 5405), (3680, 4888), (3760, 4784), (4160, 4324)]