31066880

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1867}}^1$

素因数の和:1901

約数の個数: 72

約数和(自身を含む): 80182032

約数和(自身を除く): 49115152

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 1867, 2080, 3328, 3734, 4160, 7468, 8320, 9335, 14936, 16640, 18670, 24271, 29872, 37340, 48542, 59744, 74680, 97084, 119488, 121355, 149360, 194168, 238976, 242710, 298720, 388336, 477952, 485420, 597440, 776672, 970840, 1194880, 1553344, 1941680, 2389760, 3106688, 3883360, 6213376, 7766720, 15533440, 31066880]

約数ペア:

[(1, 31066880), (2, 15533440), (4, 7766720), (5, 6213376), (8, 3883360), (10, 3106688), (13, 2389760), (16, 1941680), (20, 1553344), (26, 1194880), (32, 970840), (40, 776672), (52, 597440), (64, 485420), (65, 477952), (80, 388336), (104, 298720), (128, 242710), (130, 238976), (160, 194168), (208, 149360), (256, 121355), (260, 119488), (320, 97084), (416, 74680), (520, 59744), (640, 48542), (832, 37340), (1040, 29872), (1280, 24271), (1664, 18670), (1867, 16640), (2080, 14936), (3328, 9335), (3734, 8320), (4160, 7468)]