19590788

素因数分解:

$2^2\times 7^3\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 40656000

約数和(自身を除く): 21065212

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 109, 131, 196, 218, 262, 343, 436, 524, 686, 763, 917, 1372, 1526, 1834, 3052, 3668, 5341, 6419, 10682, 12838, 14279, 21364, 25676, 28558, 37387, 44933, 57116, 74774, 89866, 99953, 149548, 179732, 199906, 399812, 699671, 1399342, 2798684, 4897697, 9795394, 19590788]

約数ペア:

[(1, 19590788), (2, 9795394), (4, 4897697), (7, 2798684), (14, 1399342), (28, 699671), (49, 399812), (98, 199906), (109, 179732), (131, 149548), (196, 99953), (218, 89866), (262, 74774), (343, 57116), (436, 44933), (524, 37387), (686, 28558), (763, 25676), (917, 21364), (1372, 14279), (1526, 12838), (1834, 10682), (3052, 6419), (3668, 5341)]