31661440

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:891

約数の個数: 64

約数和(自身を含む): 77026320

約数和(自身を除く): 45364880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 811, 976, 1220, 1622, 1952, 2440, 3244, 3904, 4055, 4880, 6488, 7808, 8110, 9760, 12976, 16220, 19520, 25952, 32440, 39040, 49471, 51904, 64880, 98942, 103808, 129760, 197884, 247355, 259520, 395768, 494710, 519040, 791536, 989420, 1583072, 1978840, 3166144, 3957680, 6332288, 7915360, 15830720, 31661440]

約数ペア:

[(1, 31661440), (2, 15830720), (4, 7915360), (5, 6332288), (8, 3957680), (10, 3166144), (16, 1978840), (20, 1583072), (32, 989420), (40, 791536), (61, 519040), (64, 494710), (80, 395768), (122, 259520), (128, 247355), (160, 197884), (244, 129760), (305, 103808), (320, 98942), (488, 64880), (610, 51904), (640, 49471), (811, 39040), (976, 32440), (1220, 25952), (1622, 19520), (1952, 16220), (2440, 12976), (3244, 9760), (3904, 8110), (4055, 7808), (4880, 6488)]