83894420

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 179625600

約数和(自身を除く): 95731180

約数列:

[1, 2, 4, 5, 10, 20, 107, 197, 199, 214, 394, 398, 428, 535, 788, 796, 985, 995, 1070, 1970, 1990, 2140, 3940, 3980, 21079, 21293, 39203, 42158, 42586, 78406, 84316, 85172, 105395, 106465, 156812, 196015, 210790, 212930, 392030, 421580, 425860, 784060, 4194721, 8389442, 16778884, 20973605, 41947210, 83894420]

約数ペア:

[(1, 83894420), (2, 41947210), (4, 20973605), (5, 16778884), (10, 8389442), (20, 4194721), (107, 784060), (197, 425860), (199, 421580), (214, 392030), (394, 212930), (398, 210790), (428, 196015), (535, 156812), (788, 106465), (796, 105395), (985, 85172), (995, 84316), (1070, 78406), (1970, 42586), (1990, 42158), (2140, 39203), (3940, 21293), (3980, 21079)]