20274940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1493}}^1$

素因数の和:1606

約数の個数: 48

約数和(自身を含む): 49194432

約数和(自身を除く): 28919492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1493, 1940, 2716, 2986, 3395, 5972, 6790, 7465, 10451, 13580, 14930, 20902, 29860, 41804, 52255, 104510, 144821, 209020, 289642, 579284, 724105, 1013747, 1448210, 2027494, 2896420, 4054988, 5068735, 10137470, 20274940]

約数ペア:

[(1, 20274940), (2, 10137470), (4, 5068735), (5, 4054988), (7, 2896420), (10, 2027494), (14, 1448210), (20, 1013747), (28, 724105), (35, 579284), (70, 289642), (97, 209020), (140, 144821), (194, 104510), (388, 52255), (485, 41804), (679, 29860), (970, 20902), (1358, 14930), (1493, 13580), (1940, 10451), (2716, 7465), (2986, 6790), (3395, 5972)]