13021540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{331}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 31457664

約数和(自身を除く): 18436124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 331, 562, 662, 1124, 1324, 1405, 1655, 1967, 2317, 2810, 3310, 3934, 4634, 5620, 6620, 7868, 9268, 9835, 11585, 19670, 23170, 39340, 46340, 93011, 186022, 372044, 465055, 651077, 930110, 1302154, 1860220, 2604308, 3255385, 6510770, 13021540]

約数ペア:

[(1, 13021540), (2, 6510770), (4, 3255385), (5, 2604308), (7, 1860220), (10, 1302154), (14, 930110), (20, 651077), (28, 465055), (35, 372044), (70, 186022), (140, 93011), (281, 46340), (331, 39340), (562, 23170), (662, 19670), (1124, 11585), (1324, 9835), (1405, 9268), (1655, 7868), (1967, 6620), (2317, 5620), (2810, 4634), (3310, 3934)]