19203471

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 34045440

約数和(自身を除く): 14841969

約数列:

[1, 3, 7, 9, 19, 21, 57, 61, 63, 133, 171, 183, 263, 399, 427, 549, 789, 1159, 1197, 1281, 1841, 2367, 3477, 3843, 4997, 5523, 8113, 10431, 14991, 16043, 16569, 24339, 34979, 44973, 48129, 73017, 104937, 112301, 144387, 304817, 314811, 336903, 914451, 1010709, 2133719, 2743353, 6401157, 19203471]

約数ペア:

[(1, 19203471), (3, 6401157), (7, 2743353), (9, 2133719), (19, 1010709), (21, 914451), (57, 336903), (61, 314811), (63, 304817), (133, 144387), (171, 112301), (183, 104937), (263, 73017), (399, 48129), (427, 44973), (549, 34979), (789, 24339), (1159, 16569), (1197, 16043), (1281, 14991), (1841, 10431), (2367, 8113), (3477, 5523), (3843, 4997)]