18668538

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{647}}^1$

素因数の和:891

約数の個数: 48

約数和(自身を含む): 46500480

約数和(自身を除く): 27831942

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 229, 458, 647, 687, 1294, 1374, 1603, 1941, 2061, 3206, 3882, 4122, 4529, 4809, 5823, 9058, 9618, 11646, 13587, 14427, 27174, 28854, 40761, 81522, 148163, 296326, 444489, 888978, 1037141, 1333467, 2074282, 2666934, 3111423, 6222846, 9334269, 18668538]

約数ペア:

[(1, 18668538), (2, 9334269), (3, 6222846), (6, 3111423), (7, 2666934), (9, 2074282), (14, 1333467), (18, 1037141), (21, 888978), (42, 444489), (63, 296326), (126, 148163), (229, 81522), (458, 40761), (647, 28854), (687, 27174), (1294, 14427), (1374, 13587), (1603, 11646), (1941, 9618), (2061, 9058), (3206, 5823), (3882, 4809), (4122, 4529)]