20131568691

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1\times {\mathrm{661}}^1$

素因数の和:1412

約数の個数: 64

約数和(自身を含む): 31133362176

約数和(自身を除く): 11001793485

約数列:

[1, 3, 13, 17, 39, 51, 71, 213, 221, 647, 661, 663, 923, 1207, 1941, 1983, 2769, 3621, 8411, 8593, 10999, 11237, 15691, 25233, 25779, 32997, 33711, 45937, 46931, 47073, 137811, 140793, 142987, 146081, 427667, 428961, 438243, 597181, 610103, 780929, 797827, 1283001, 1791543, 1830309, 2342787, 2393481, 5559671, 7270339, 10152077, 10371751, 16679013, 21811017, 30364357, 30456231, 31115253, 91093071, 94514407, 283543221, 394736641, 516194069, 1184209923, 1548582207, 6710522897, 20131568691]

約数ペア:

[(1, 20131568691), (3, 6710522897), (13, 1548582207), (17, 1184209923), (39, 516194069), (51, 394736641), (71, 283543221), (213, 94514407), (221, 91093071), (647, 31115253), (661, 30456231), (663, 30364357), (923, 21811017), (1207, 16679013), (1941, 10371751), (1983, 10152077), (2769, 7270339), (3621, 5559671), (8411, 2393481), (8593, 2342787), (10999, 1830309), (11237, 1791543), (15691, 1283001), (25233, 797827), (25779, 780929), (32997, 610103), (33711, 597181), (45937, 438243), (46931, 428961), (47073, 427667), (137811, 146081), (140793, 142987)]