217790720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:360

約数の個数: 144

約数和(自身を含む): 604369920

約数和(自身を除く): 386579200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 109, 112, 128, 140, 160, 218, 223, 224, 256, 280, 320, 436, 446, 448, 545, 560, 640, 763, 872, 892, 896, 1090, 1115, 1120, 1280, 1526, 1561, 1744, 1784, 1792, 2180, 2230, 2240, 3052, 3122, 3488, 3568, 3815, 4360, 4460, 4480, 6104, 6244, 6976, 7136, 7630, 7805, 8720, 8920, 8960, 12208, 12488, 13952, 14272, 15260, 15610, 17440, 17840, 24307, 24416, 24976, 27904, 28544, 30520, 31220, 34880, 35680, 48614, 48832, 49952, 57088, 61040, 62440, 69760, 71360, 97228, 97664, 99904, 121535, 122080, 124880, 139520, 142720, 170149, 194456, 195328, 199808, 243070, 244160, 249760, 285440, 340298, 388912, 399616, 486140, 488320, 499520, 680596, 777824, 850745, 972280, 976640, 999040, 1361192, 1555648, 1701490, 1944560, 1998080, 2722384, 3111296, 3402980, 3889120, 5444768, 6222592, 6805960, 7778240, 10889536, 13611920, 15556480, 21779072, 27223840, 31112960, 43558144, 54447680, 108895360, 217790720]

約数ペア:

[(1, 217790720), (2, 108895360), (4, 54447680), (5, 43558144), (7, 31112960), (8, 27223840), (10, 21779072), (14, 15556480), (16, 13611920), (20, 10889536), (28, 7778240), (32, 6805960), (35, 6222592), (40, 5444768), (56, 3889120), (64, 3402980), (70, 3111296), (80, 2722384), (109, 1998080), (112, 1944560), (128, 1701490), (140, 1555648), (160, 1361192), (218, 999040), (223, 976640), (224, 972280), (256, 850745), (280, 777824), (320, 680596), (436, 499520), (446, 488320), (448, 486140), (545, 399616), (560, 388912), (640, 340298), (763, 285440), (872, 249760), (892, 244160), (896, 243070), (1090, 199808), (1115, 195328), (1120, 194456), (1280, 170149), (1526, 142720), (1561, 139520), (1744, 124880), (1784, 122080), (1792, 121535), (2180, 99904), (2230, 97664), (2240, 97228), (3052, 71360), (3122, 69760), (3488, 62440), (3568, 61040), (3815, 57088), (4360, 49952), (4460, 48832), (4480, 48614), (6104, 35680), (6244, 34880), (6976, 31220), (7136, 30520), (7630, 28544), (7805, 27904), (8720, 24976), (8920, 24416), (8960, 24307), (12208, 17840), (12488, 17440), (13952, 15610), (14272, 15260)]