156729440

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19991}}^1$

素因数の和:20020

約数の個数: 72

約数和(自身を含む): 430747632

約数和(自身を除く): 274018192

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 19991, 39982, 79964, 99955, 139937, 159928, 199910, 279874, 319856, 399820, 559748, 639712, 699685, 799640, 979559, 1119496, 1399370, 1599280, 1959118, 2238992, 2798740, 3198560, 3918236, 4477984, 4897795, 5597480, 7836472, 9795590, 11194960, 15672944, 19591180, 22389920, 31345888, 39182360, 78364720, 156729440]

約数ペア:

[(1, 156729440), (2, 78364720), (4, 39182360), (5, 31345888), (7, 22389920), (8, 19591180), (10, 15672944), (14, 11194960), (16, 9795590), (20, 7836472), (28, 5597480), (32, 4897795), (35, 4477984), (40, 3918236), (49, 3198560), (56, 2798740), (70, 2238992), (80, 1959118), (98, 1599280), (112, 1399370), (140, 1119496), (160, 979559), (196, 799640), (224, 699685), (245, 639712), (280, 559748), (392, 399820), (490, 319856), (560, 279874), (784, 199910), (980, 159928), (1120, 139937), (1568, 99955), (1960, 79964), (3920, 39982), (7840, 19991)]