21374613

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:115

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 14268267

約数列:

[1, 3, 9, 13, 23, 39, 47, 69, 117, 141, 169, 207, 299, 423, 507, 611, 897, 1081, 1521, 1833, 2197, 2691, 3243, 3887, 5499, 6591, 7943, 9729, 11661, 14053, 19773, 23829, 34983, 42159, 50531, 71487, 103259, 126477, 151593, 182689, 309777, 454779, 548067, 929331, 1644201, 2374957, 7124871, 21374613]

約数ペア:

[(1, 21374613), (3, 7124871), (9, 2374957), (13, 1644201), (23, 929331), (39, 548067), (47, 454779), (69, 309777), (117, 182689), (141, 151593), (169, 126477), (207, 103259), (299, 71487), (423, 50531), (507, 42159), (611, 34983), (897, 23829), (1081, 19773), (1521, 14053), (1833, 11661), (2197, 9729), (2691, 7943), (3243, 6591), (3887, 5499)]