320499680

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:492

約数の個数: 96

約数和(自身を含む): 778921920

約数和(自身を除く): 458422240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 89, 142, 160, 178, 284, 317, 355, 356, 445, 568, 634, 710, 712, 890, 1136, 1268, 1420, 1424, 1585, 1780, 2272, 2536, 2840, 2848, 3170, 3560, 5072, 5680, 6319, 6340, 7120, 10144, 11360, 12638, 12680, 14240, 22507, 25276, 25360, 28213, 31595, 45014, 50552, 50720, 56426, 63190, 90028, 101104, 112535, 112852, 126380, 141065, 180056, 202208, 225070, 225704, 252760, 282130, 360112, 450140, 451408, 505520, 564260, 720224, 900280, 902816, 1011040, 1128520, 1800560, 2003123, 2257040, 3601120, 4006246, 4514080, 8012492, 10015615, 16024984, 20031230, 32049968, 40062460, 64099936, 80124920, 160249840, 320499680]

約数ペア:

[(1, 320499680), (2, 160249840), (4, 80124920), (5, 64099936), (8, 40062460), (10, 32049968), (16, 20031230), (20, 16024984), (32, 10015615), (40, 8012492), (71, 4514080), (80, 4006246), (89, 3601120), (142, 2257040), (160, 2003123), (178, 1800560), (284, 1128520), (317, 1011040), (355, 902816), (356, 900280), (445, 720224), (568, 564260), (634, 505520), (710, 451408), (712, 450140), (890, 360112), (1136, 282130), (1268, 252760), (1420, 225704), (1424, 225070), (1585, 202208), (1780, 180056), (2272, 141065), (2536, 126380), (2840, 112852), (2848, 112535), (3170, 101104), (3560, 90028), (5072, 63190), (5680, 56426), (6319, 50720), (6340, 50552), (7120, 45014), (10144, 31595), (11360, 28213), (12638, 25360), (12680, 25276), (14240, 22507)]