80204440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1024

約数の個数: 64

約数和(自身を含む): 189112320

約数和(自身を除く): 108907880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 568, 620, 710, 911, 1240, 1420, 1822, 2201, 2840, 3644, 4402, 4555, 7288, 8804, 9110, 11005, 17608, 18220, 22010, 28241, 36440, 44020, 56482, 64681, 88040, 112964, 129362, 141205, 225928, 258724, 282410, 323405, 517448, 564820, 646810, 1129640, 1293620, 2005111, 2587240, 4010222, 8020444, 10025555, 16040888, 20051110, 40102220, 80204440]

約数ペア:

[(1, 80204440), (2, 40102220), (4, 20051110), (5, 16040888), (8, 10025555), (10, 8020444), (20, 4010222), (31, 2587240), (40, 2005111), (62, 1293620), (71, 1129640), (124, 646810), (142, 564820), (155, 517448), (248, 323405), (284, 282410), (310, 258724), (355, 225928), (568, 141205), (620, 129362), (710, 112964), (911, 88040), (1240, 64681), (1420, 56482), (1822, 44020), (2201, 36440), (2840, 28241), (3644, 22010), (4402, 18220), (4555, 17608), (7288, 11005), (8804, 9110)]