78254960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19963}}^1$

素因数の和:19990

約数の個数: 60

約数和(自身を含む): 211658328

約数和(自身を除く): 133403368

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, 19963, 39926, 79852, 99815, 139741, 159704, 199630, 279482, 319408, 399260, 558964, 698705, 798520, 978187, 1117928, 1397410, 1597040, 1956374, 2235856, 2794820, 3912748, 4890935, 5589640, 7825496, 9781870, 11179280, 15650992, 19563740, 39127480, 78254960]

約数ペア:

[(1, 78254960), (2, 39127480), (4, 19563740), (5, 15650992), (7, 11179280), (8, 9781870), (10, 7825496), (14, 5589640), (16, 4890935), (20, 3912748), (28, 2794820), (35, 2235856), (40, 1956374), (49, 1597040), (56, 1397410), (70, 1117928), (80, 978187), (98, 798520), (112, 698705), (140, 558964), (196, 399260), (245, 319408), (280, 279482), (392, 199630), (490, 159704), (560, 139741), (784, 99815), (980, 79852), (1960, 39926), (3920, 19963)]