81919740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{195047}}^1$

素因数の和:195066

約数の個数: 48

約数和(自身を含む): 262144512

約数和(自身を除く): 180224772

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 195047, 390094, 585141, 780188, 975235, 1170282, 1365329, 1950470, 2340564, 2730658, 2925705, 3900940, 4095987, 5461316, 5851410, 6826645, 8191974, 11702820, 13653290, 16383948, 20479935, 27306580, 40959870, 81919740]

約数ペア:

[(1, 81919740), (2, 40959870), (3, 27306580), (4, 20479935), (5, 16383948), (6, 13653290), (7, 11702820), (10, 8191974), (12, 6826645), (14, 5851410), (15, 5461316), (20, 4095987), (21, 3900940), (28, 2925705), (30, 2730658), (35, 2340564), (42, 1950470), (60, 1365329), (70, 1170282), (84, 975235), (105, 780188), (140, 585141), (210, 390094), (420, 195047)]