251120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 40

約数和(自身を含む): 605616

約数和(自身を除く): 354496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 73, 80, 86, 146, 172, 215, 292, 344, 365, 430, 584, 688, 730, 860, 1168, 1460, 1720, 2920, 3139, 3440, 5840, 6278, 12556, 15695, 25112, 31390, 50224, 62780, 125560, 251120]

約数ペア:

[(1, 251120), (2, 125560), (4, 62780), (5, 50224), (8, 31390), (10, 25112), (16, 15695), (20, 12556), (40, 6278), (43, 5840), (73, 3440), (80, 3139), (86, 2920), (146, 1720), (172, 1460), (215, 1168), (292, 860), (344, 730), (365, 688), (430, 584)]