31112960

素因数分解:

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

素因数の和:353

約数の個数: 72

約数和(自身を含む): 75546240

約数和(自身を除く): 44433280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 223, 256, 320, 436, 446, 545, 640, 872, 892, 1090, 1115, 1280, 1744, 1784, 2180, 2230, 3488, 3568, 4360, 4460, 6976, 7136, 8720, 8920, 13952, 14272, 17440, 17840, 24307, 27904, 28544, 34880, 35680, 48614, 57088, 69760, 71360, 97228, 121535, 139520, 142720, 194456, 243070, 285440, 388912, 486140, 777824, 972280, 1555648, 1944560, 3111296, 3889120, 6222592, 7778240, 15556480, 31112960]

約数ペア:

[(1, 31112960), (2, 15556480), (4, 7778240), (5, 6222592), (8, 3889120), (10, 3111296), (16, 1944560), (20, 1555648), (32, 972280), (40, 777824), (64, 486140), (80, 388912), (109, 285440), (128, 243070), (160, 194456), (218, 142720), (223, 139520), (256, 121535), (320, 97228), (436, 71360), (446, 69760), (545, 57088), (640, 48614), (872, 35680), (892, 34880), (1090, 28544), (1115, 27904), (1280, 24307), (1744, 17840), (1784, 17440), (2180, 14272), (2230, 13952), (3488, 8920), (3568, 8720), (4360, 7136), (4460, 6976)]