31009520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:942

約数の個数: 80

約数和(自身を含む): 79280640

約数和(自身を除く): 48271120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 760, 874, 887, 920, 1520, 1748, 1774, 1840, 2185, 3496, 3548, 4370, 4435, 6992, 7096, 8740, 8870, 14192, 16853, 17480, 17740, 20401, 33706, 34960, 35480, 40802, 67412, 70960, 81604, 84265, 102005, 134824, 163208, 168530, 204010, 269648, 326416, 337060, 387619, 408020, 674120, 775238, 816040, 1348240, 1550476, 1632080, 1938095, 3100952, 3876190, 6201904, 7752380, 15504760, 31009520]

約数ペア:

[(1, 31009520), (2, 15504760), (4, 7752380), (5, 6201904), (8, 3876190), (10, 3100952), (16, 1938095), (19, 1632080), (20, 1550476), (23, 1348240), (38, 816040), (40, 775238), (46, 674120), (76, 408020), (80, 387619), (92, 337060), (95, 326416), (115, 269648), (152, 204010), (184, 168530), (190, 163208), (230, 134824), (304, 102005), (368, 84265), (380, 81604), (437, 70960), (460, 67412), (760, 40802), (874, 35480), (887, 34960), (920, 33706), (1520, 20401), (1748, 17740), (1774, 17480), (1840, 16853), (2185, 14192), (3496, 8870), (3548, 8740), (4370, 7096), (4435, 6992)]