20872320

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1553}}^1$

素因数の和:1582

約数の個数: 128

約数和(自身を含む): 76083840

約数和(自身を除く): 55211520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1553, 1680, 1920, 2240, 2688, 3106, 3360, 4480, 4659, 6212, 6720, 7765, 9318, 10871, 12424, 13440, 15530, 18636, 21742, 23295, 24848, 31060, 32613, 37272, 43484, 46590, 49696, 54355, 62120, 65226, 74544, 86968, 93180, 99392, 108710, 124240, 130452, 149088, 163065, 173936, 186360, 198784, 217420, 248480, 260904, 298176, 326130, 347872, 372720, 434840, 496960, 521808, 596352, 652260, 695744, 745440, 869680, 993920, 1043616, 1304520, 1391488, 1490880, 1739360, 2087232, 2609040, 2981760, 3478720, 4174464, 5218080, 6957440, 10436160, 20872320]

約数ペア:

[(1, 20872320), (2, 10436160), (3, 6957440), (4, 5218080), (5, 4174464), (6, 3478720), (7, 2981760), (8, 2609040), (10, 2087232), (12, 1739360), (14, 1490880), (15, 1391488), (16, 1304520), (20, 1043616), (21, 993920), (24, 869680), (28, 745440), (30, 695744), (32, 652260), (35, 596352), (40, 521808), (42, 496960), (48, 434840), (56, 372720), (60, 347872), (64, 326130), (70, 298176), (80, 260904), (84, 248480), (96, 217420), (105, 198784), (112, 186360), (120, 173936), (128, 163065), (140, 149088), (160, 130452), (168, 124240), (192, 108710), (210, 99392), (224, 93180), (240, 86968), (280, 74544), (320, 65226), (336, 62120), (384, 54355), (420, 49696), (448, 46590), (480, 43484), (560, 37272), (640, 32613), (672, 31060), (840, 24848), (896, 23295), (960, 21742), (1120, 18636), (1344, 15530), (1553, 13440), (1680, 12424), (1920, 10871), (2240, 9318), (2688, 7765), (3106, 6720), (3360, 6212), (4480, 4659)]