664080440

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{448703}}^1$

素因数の和:448751

約数の個数: 32

約数和(自身を含む): 1534567680

約数和(自身を除く): 870487240

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 448703, 897406, 1794812, 2243515, 3589624, 4487030, 8974060, 16602011, 17948120, 33204022, 66408044, 83010055, 132816088, 166020110, 332040220, 664080440]

約数ペア:

[(1, 664080440), (2, 332040220), (4, 166020110), (5, 132816088), (8, 83010055), (10, 66408044), (20, 33204022), (37, 17948120), (40, 16602011), (74, 8974060), (148, 4487030), (185, 3589624), (296, 2243515), (370, 1794812), (740, 897406), (1480, 448703)]