21178179

素因数分解:

$3^6\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 56

約数和(自身を含む): 36724800

約数和(自身を除く): 15546621

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 139, 171, 209, 243, 297, 417, 513, 627, 729, 891, 1251, 1529, 1539, 1881, 2641, 2673, 3753, 4587, 4617, 5643, 7923, 8019, 11259, 13761, 13851, 16929, 23769, 29051, 33777, 41283, 50787, 71307, 87153, 101331, 123849, 152361, 213921, 261459, 371547, 641763, 784377, 1114641, 1925289, 2353131, 7059393, 21178179]

約数ペア:

[(1, 21178179), (3, 7059393), (9, 2353131), (11, 1925289), (19, 1114641), (27, 784377), (33, 641763), (57, 371547), (81, 261459), (99, 213921), (139, 152361), (171, 123849), (209, 101331), (243, 87153), (297, 71307), (417, 50787), (513, 41283), (627, 33777), (729, 29051), (891, 23769), (1251, 16929), (1529, 13851), (1539, 13761), (1881, 11259), (2641, 8019), (2673, 7923), (3753, 5643), (4587, 4617)]