1978130

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{367}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 4530816

約数和(自身を除く): 2552686

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 367, 385, 490, 539, 734, 770, 1078, 1835, 2569, 2695, 3670, 4037, 5138, 5390, 8074, 12845, 17983, 20185, 25690, 28259, 35966, 40370, 56518, 89915, 141295, 179830, 197813, 282590, 395626, 989065, 1978130]

約数ペア:

[(1, 1978130), (2, 989065), (5, 395626), (7, 282590), (10, 197813), (11, 179830), (14, 141295), (22, 89915), (35, 56518), (49, 40370), (55, 35966), (70, 28259), (77, 25690), (98, 20185), (110, 17983), (154, 12845), (245, 8074), (367, 5390), (385, 5138), (490, 4037), (539, 3670), (734, 2695), (770, 2569), (1078, 1835)]