20053220120

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{79337}}^1$

素因数の和:79508

約数の個数: 64

約数和(自身を含む): 46269921600

約数和(自身を除く): 26216701480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 142, 178, 284, 355, 356, 445, 568, 710, 712, 890, 1420, 1780, 2840, 3560, 6319, 12638, 25276, 31595, 50552, 63190, 79337, 126380, 158674, 252760, 317348, 396685, 634696, 793370, 1586740, 3173480, 5632927, 7060993, 11265854, 14121986, 22531708, 28164635, 28243972, 35304965, 45063416, 56329270, 56487944, 70609930, 112658540, 141219860, 225317080, 282439720, 501330503, 1002661006, 2005322012, 2506652515, 4010644024, 5013305030, 10026610060, 20053220120]

約数ペア:

[(1, 20053220120), (2, 10026610060), (4, 5013305030), (5, 4010644024), (8, 2506652515), (10, 2005322012), (20, 1002661006), (40, 501330503), (71, 282439720), (89, 225317080), (142, 141219860), (178, 112658540), (284, 70609930), (355, 56487944), (356, 56329270), (445, 45063416), (568, 35304965), (710, 28243972), (712, 28164635), (890, 22531708), (1420, 14121986), (1780, 11265854), (2840, 7060993), (3560, 5632927), (6319, 3173480), (12638, 1586740), (25276, 793370), (31595, 634696), (50552, 396685), (63190, 317348), (79337, 252760), (126380, 158674)]