261491520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{647}}^1$

素因数の和:1088

約数の個数: 112

約数和(自身を含む): 833493888

約数和(自身を除く): 572002368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 421, 480, 647, 842, 960, 1263, 1294, 1684, 1941, 2105, 2526, 2588, 3235, 3368, 3882, 4210, 5052, 5176, 6315, 6470, 6736, 7764, 8420, 9705, 10104, 10352, 12630, 12940, 13472, 15528, 16840, 19410, 20208, 20704, 25260, 25880, 26944, 31056, 33680, 38820, 40416, 41408, 50520, 51760, 62112, 67360, 77640, 80832, 101040, 103520, 124224, 134720, 155280, 202080, 207040, 272387, 310560, 404160, 544774, 621120, 817161, 1089548, 1361935, 1634322, 2179096, 2723870, 3268644, 4085805, 4358192, 5447740, 6537288, 8171610, 8716384, 10895480, 13074576, 16343220, 17432768, 21790960, 26149152, 32686440, 43581920, 52298304, 65372880, 87163840, 130745760, 261491520]

約数ペア:

[(1, 261491520), (2, 130745760), (3, 87163840), (4, 65372880), (5, 52298304), (6, 43581920), (8, 32686440), (10, 26149152), (12, 21790960), (15, 17432768), (16, 16343220), (20, 13074576), (24, 10895480), (30, 8716384), (32, 8171610), (40, 6537288), (48, 5447740), (60, 4358192), (64, 4085805), (80, 3268644), (96, 2723870), (120, 2179096), (160, 1634322), (192, 1361935), (240, 1089548), (320, 817161), (421, 621120), (480, 544774), (647, 404160), (842, 310560), (960, 272387), (1263, 207040), (1294, 202080), (1684, 155280), (1941, 134720), (2105, 124224), (2526, 103520), (2588, 101040), (3235, 80832), (3368, 77640), (3882, 67360), (4210, 62112), (5052, 51760), (5176, 50520), (6315, 41408), (6470, 40416), (6736, 38820), (7764, 33680), (8420, 31056), (9705, 26944), (10104, 25880), (10352, 25260), (12630, 20704), (12940, 20208), (13472, 19410), (15528, 16840)]