18231680

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 44394480

約数和(自身を除く): 26162800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 467, 488, 610, 640, 934, 976, 1220, 1868, 1952, 2335, 2440, 3736, 3904, 4670, 4880, 7472, 7808, 9340, 9760, 14944, 18680, 19520, 28487, 29888, 37360, 39040, 56974, 59776, 74720, 113948, 142435, 149440, 227896, 284870, 298880, 455792, 569740, 911584, 1139480, 1823168, 2278960, 3646336, 4557920, 9115840, 18231680]

約数ペア:

[(1, 18231680), (2, 9115840), (4, 4557920), (5, 3646336), (8, 2278960), (10, 1823168), (16, 1139480), (20, 911584), (32, 569740), (40, 455792), (61, 298880), (64, 284870), (80, 227896), (122, 149440), (128, 142435), (160, 113948), (244, 74720), (305, 59776), (320, 56974), (467, 39040), (488, 37360), (610, 29888), (640, 28487), (934, 19520), (976, 18680), (1220, 14944), (1868, 9760), (1952, 9340), (2335, 7808), (2440, 7472), (3736, 4880), (3904, 4670)]