1245040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:289

約数の個数: 40

約数和(自身を含む): 2946240

約数和(自身を除く): 1701200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 197, 316, 394, 395, 632, 788, 790, 985, 1264, 1576, 1580, 1970, 3152, 3160, 3940, 6320, 7880, 15563, 15760, 31126, 62252, 77815, 124504, 155630, 249008, 311260, 622520, 1245040]

約数ペア:

[(1, 1245040), (2, 622520), (4, 311260), (5, 249008), (8, 155630), (10, 124504), (16, 77815), (20, 62252), (40, 31126), (79, 15760), (80, 15563), (158, 7880), (197, 6320), (316, 3940), (394, 3160), (395, 3152), (632, 1970), (788, 1580), (790, 1576), (985, 1264)]