39970280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20393}}^1$

素因数の和:20418

約数の個数: 48

約数和(自身を含む): 104621220

約数和(自身を除く): 64650940

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20393, 40786, 81572, 101965, 142751, 163144, 203930, 285502, 407860, 571004, 713755, 815720, 999257, 1142008, 1427510, 1998514, 2855020, 3997028, 4996285, 5710040, 7994056, 9992570, 19985140, 39970280]

約数ペア:

[(1, 39970280), (2, 19985140), (4, 9992570), (5, 7994056), (7, 5710040), (8, 4996285), (10, 3997028), (14, 2855020), (20, 1998514), (28, 1427510), (35, 1142008), (40, 999257), (49, 815720), (56, 713755), (70, 571004), (98, 407860), (140, 285502), (196, 203930), (245, 163144), (280, 142751), (392, 101965), (490, 81572), (980, 40786), (1960, 20393)]