127802020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{859}}^1$

素因数の和:1084

約数の個数: 48

約数和(自身を含む): 276534720

約数和(自身を除く): 148732700

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 173, 215, 346, 430, 692, 859, 860, 865, 1718, 1730, 3436, 3460, 4295, 7439, 8590, 14878, 17180, 29756, 36937, 37195, 73874, 74390, 147748, 148607, 148780, 184685, 297214, 369370, 594428, 738740, 743035, 1486070, 2972140, 6390101, 12780202, 25560404, 31950505, 63901010, 127802020]

約数ペア:

[(1, 127802020), (2, 63901010), (4, 31950505), (5, 25560404), (10, 12780202), (20, 6390101), (43, 2972140), (86, 1486070), (172, 743035), (173, 738740), (215, 594428), (346, 369370), (430, 297214), (692, 184685), (859, 148780), (860, 148607), (865, 147748), (1718, 74390), (1730, 73874), (3436, 37195), (3460, 36937), (4295, 29756), (7439, 17180), (8590, 14878)]