254610680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:696

約数の個数: 64

約数和(自身を含む): 584496000

約数和(自身を除く): 329885320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 197, 316, 394, 395, 409, 632, 788, 790, 818, 985, 1576, 1580, 1636, 1970, 2045, 3160, 3272, 3940, 4090, 7880, 8180, 15563, 16360, 31126, 32311, 62252, 64622, 77815, 80573, 124504, 129244, 155630, 161146, 161555, 258488, 311260, 322292, 323110, 402865, 622520, 644584, 646220, 805730, 1292440, 1611460, 3222920, 6365267, 12730534, 25461068, 31826335, 50922136, 63652670, 127305340, 254610680]

約数ペア:

[(1, 254610680), (2, 127305340), (4, 63652670), (5, 50922136), (8, 31826335), (10, 25461068), (20, 12730534), (40, 6365267), (79, 3222920), (158, 1611460), (197, 1292440), (316, 805730), (394, 646220), (395, 644584), (409, 622520), (632, 402865), (788, 323110), (790, 322292), (818, 311260), (985, 258488), (1576, 161555), (1580, 161146), (1636, 155630), (1970, 129244), (2045, 124504), (3160, 80573), (3272, 77815), (3940, 64622), (4090, 62252), (7880, 32311), (8180, 31126), (15563, 16360)]