81708060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194543}}^1$

素因数の和:194562

約数の個数: 48

約数和(自身を含む): 261467136

約数和(自身を除く): 179759076

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, 194543, 389086, 583629, 778172, 972715, 1167258, 1361801, 1945430, 2334516, 2723602, 2918145, 3890860, 4085403, 5447204, 5836290, 6809005, 8170806, 11672580, 13618010, 16341612, 20427015, 27236020, 40854030, 81708060]

約数ペア:

[(1, 81708060), (2, 40854030), (3, 27236020), (4, 20427015), (5, 16341612), (6, 13618010), (7, 11672580), (10, 8170806), (12, 6809005), (14, 5836290), (15, 5447204), (20, 4085403), (21, 3890860), (28, 2918145), (30, 2723602), (35, 2334516), (42, 1945430), (60, 1361801), (70, 1167258), (84, 972715), (105, 778172), (140, 583629), (210, 389086), (420, 194543)]