1820780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 4233600

約数和(自身を除く): 2412820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 149, 188, 235, 260, 298, 470, 596, 611, 745, 940, 1222, 1490, 1937, 2444, 2980, 3055, 3874, 6110, 7003, 7748, 9685, 12220, 14006, 19370, 28012, 35015, 38740, 70030, 91039, 140060, 182078, 364156, 455195, 910390, 1820780]

約数ペア:

[(1, 1820780), (2, 910390), (4, 455195), (5, 364156), (10, 182078), (13, 140060), (20, 91039), (26, 70030), (47, 38740), (52, 35015), (65, 28012), (94, 19370), (130, 14006), (149, 12220), (188, 9685), (235, 7748), (260, 7003), (298, 6110), (470, 3874), (596, 3055), (611, 2980), (745, 2444), (940, 1937), (1222, 1490)]