20857080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{971}}^1$

素因数の和:1164

約数の個数: 64

約数和(自身を含む): 62985600

約数和(自身を除く): 42128520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179, 358, 537, 716, 895, 971, 1074, 1432, 1790, 1942, 2148, 2685, 2913, 3580, 3884, 4296, 4855, 5370, 5826, 7160, 7768, 9710, 10740, 11652, 14565, 19420, 21480, 23304, 29130, 38840, 58260, 116520, 173809, 347618, 521427, 695236, 869045, 1042854, 1390472, 1738090, 2085708, 2607135, 3476180, 4171416, 5214270, 6952360, 10428540, 20857080]

約数ペア:

[(1, 20857080), (2, 10428540), (3, 6952360), (4, 5214270), (5, 4171416), (6, 3476180), (8, 2607135), (10, 2085708), (12, 1738090), (15, 1390472), (20, 1042854), (24, 869045), (30, 695236), (40, 521427), (60, 347618), (120, 173809), (179, 116520), (358, 58260), (537, 38840), (716, 29130), (895, 23304), (971, 21480), (1074, 19420), (1432, 14565), (1790, 11652), (1942, 10740), (2148, 9710), (2685, 7768), (2913, 7160), (3580, 5826), (3884, 5370), (4296, 4855)]