78200080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19949}}^1$

素因数の和:19976

約数の個数: 60

約数和(自身を含む): 211509900

約数和(自身を除く): 133309820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 19949, 39898, 79796, 99745, 139643, 159592, 199490, 279286, 319184, 398980, 558572, 698215, 797960, 977501, 1117144, 1396430, 1595920, 1955002, 2234288, 2792860, 3910004, 4887505, 5585720, 7820008, 9775010, 11171440, 15640016, 19550020, 39100040, 78200080]

約数ペア:

[(1, 78200080), (2, 39100040), (4, 19550020), (5, 15640016), (7, 11171440), (8, 9775010), (10, 7820008), (14, 5585720), (16, 4887505), (20, 3910004), (28, 2792860), (35, 2234288), (40, 1955002), (49, 1595920), (56, 1396430), (70, 1117144), (80, 977501), (98, 797960), (112, 698215), (140, 558572), (196, 398980), (245, 319184), (280, 279286), (392, 199490), (490, 159592), (560, 139643), (784, 99745), (980, 79796), (1960, 39898), (3920, 19949)]