19761880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15937}}^1$

素因数の和:15979

約数の個数: 32

約数和(自身を含む): 45901440

約数和(自身を除く): 26139560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15937, 31874, 63748, 79685, 127496, 159370, 318740, 494047, 637480, 988094, 1976188, 2470235, 3952376, 4940470, 9880940, 19761880]

約数ペア:

[(1, 19761880), (2, 9880940), (4, 4940470), (5, 3952376), (8, 2470235), (10, 1976188), (20, 988094), (31, 637480), (40, 494047), (62, 318740), (124, 159370), (155, 127496), (248, 79685), (310, 63748), (620, 31874), (1240, 15937)]