20149040

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6143}}^1$

素因数の和:6197

約数の個数: 40

約数和(自身を含む): 47996928

約数和(自身を除く): 27847888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6143, 12286, 24572, 30715, 49144, 61430, 98288, 122860, 245720, 251863, 491440, 503726, 1007452, 1259315, 2014904, 2518630, 4029808, 5037260, 10074520, 20149040]

約数ペア:

[(1, 20149040), (2, 10074520), (4, 5037260), (5, 4029808), (8, 2518630), (10, 2014904), (16, 1259315), (20, 1007452), (40, 503726), (41, 491440), (80, 251863), (82, 245720), (164, 122860), (205, 98288), (328, 61430), (410, 49144), (656, 30715), (820, 24572), (1640, 12286), (3280, 6143)]