19991844

素因数分解:

$2^2\times 3^2\times {\mathrm{557}}^1\times {\mathrm{997}}^1$

素因数の和:1564

約数の個数: 36

約数和(自身を含む): 50676444

約数和(自身を除く): 30684600

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 557, 997, 1114, 1671, 1994, 2228, 2991, 3342, 3988, 5013, 5982, 6684, 8973, 10026, 11964, 17946, 20052, 35892, 555329, 1110658, 1665987, 2221316, 3331974, 4997961, 6663948, 9995922, 19991844]

約数ペア:

[(1, 19991844), (2, 9995922), (3, 6663948), (4, 4997961), (6, 3331974), (9, 2221316), (12, 1665987), (18, 1110658), (36, 555329), (557, 35892), (997, 20052), (1114, 17946), (1671, 11964), (1994, 10026), (2228, 8973), (2991, 6684), (3342, 5982), (3988, 5013)]