18880904

素因数分解:

$2^3\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1399}}^1$

素因数の和:1653

約数の個数: 32

約数和(自身を含む): 40656000

約数和(自身を除く): 21775096

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 241, 482, 964, 1399, 1687, 1928, 2798, 3374, 5596, 6748, 9793, 11192, 13496, 19586, 39172, 78344, 337159, 674318, 1348636, 2360113, 2697272, 4720226, 9440452, 18880904]

約数ペア:

[(1, 18880904), (2, 9440452), (4, 4720226), (7, 2697272), (8, 2360113), (14, 1348636), (28, 674318), (56, 337159), (241, 78344), (482, 39172), (964, 19586), (1399, 13496), (1687, 11192), (1928, 9793), (2798, 6748), (3374, 5596)]