19946000

素因数分解:

$2^4\times 5^3\times {\mathrm{9973}}^1$

素因数の和:9996

約数の個数: 40

約数和(自身を含む): 48234264

約数和(自身を除く): 28288264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 9973, 19946, 39892, 49865, 79784, 99730, 159568, 199460, 249325, 398920, 498650, 797840, 997300, 1246625, 1994600, 2493250, 3989200, 4986500, 9973000, 19946000]

約数ペア:

[(1, 19946000), (2, 9973000), (4, 4986500), (5, 3989200), (8, 2493250), (10, 1994600), (16, 1246625), (20, 997300), (25, 797840), (40, 498650), (50, 398920), (80, 249325), (100, 199460), (125, 159568), (200, 99730), (250, 79784), (400, 49865), (500, 39892), (1000, 19946), (2000, 9973)]