28078540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1531}}^1$

素因数の和:1678

約数の個数: 48

約数和(自身を含む): 67947264

約数和(自身を除く): 39868724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1531, 1834, 2620, 3062, 3668, 4585, 6124, 7655, 9170, 10717, 15310, 18340, 21434, 30620, 42868, 53585, 107170, 200561, 214340, 401122, 802244, 1002805, 1403927, 2005610, 2807854, 4011220, 5615708, 7019635, 14039270, 28078540]

約数ペア:

[(1, 28078540), (2, 14039270), (4, 7019635), (5, 5615708), (7, 4011220), (10, 2807854), (14, 2005610), (20, 1403927), (28, 1002805), (35, 802244), (70, 401122), (131, 214340), (140, 200561), (262, 107170), (524, 53585), (655, 42868), (917, 30620), (1310, 21434), (1531, 18340), (1834, 15310), (2620, 10717), (3062, 9170), (3668, 7655), (4585, 6124)]