78645140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18121}}^1$

素因数の和:18168

約数の個数: 48

約数和(自身を含む): 194847744

約数和(自身を除く): 116202604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 18121, 36242, 72484, 90605, 126847, 181210, 253694, 362420, 507388, 561751, 634235, 1123502, 1268470, 2247004, 2536940, 2808755, 3932257, 5617510, 7864514, 11235020, 15729028, 19661285, 39322570, 78645140]

約数ペア:

[(1, 78645140), (2, 39322570), (4, 19661285), (5, 15729028), (7, 11235020), (10, 7864514), (14, 5617510), (20, 3932257), (28, 2808755), (31, 2536940), (35, 2247004), (62, 1268470), (70, 1123502), (124, 634235), (140, 561751), (155, 507388), (217, 362420), (310, 253694), (434, 181210), (620, 126847), (868, 90605), (1085, 72484), (2170, 36242), (4340, 18121)]