280219040

素因数分解:

$2^5\times 5^1\times {\mathrm{877}}^1\times {\mathrm{1997}}^1$

素因数の和:2889

約数の個数: 48

約数和(自身を含む): 663104232

約数和(自身を除く): 382885192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 877, 1754, 1997, 3508, 3994, 4385, 7016, 7988, 8770, 9985, 14032, 15976, 17540, 19970, 28064, 31952, 35080, 39940, 63904, 70160, 79880, 140320, 159760, 319520, 1751369, 3502738, 7005476, 8756845, 14010952, 17513690, 28021904, 35027380, 56043808, 70054760, 140109520, 280219040]

約数ペア:

[(1, 280219040), (2, 140109520), (4, 70054760), (5, 56043808), (8, 35027380), (10, 28021904), (16, 17513690), (20, 14010952), (32, 8756845), (40, 7005476), (80, 3502738), (160, 1751369), (877, 319520), (1754, 159760), (1997, 140320), (3508, 79880), (3994, 70160), (4385, 63904), (7016, 39940), (7988, 35080), (8770, 31952), (9985, 28064), (14032, 19970), (15976, 17540)]