21205728

素因数分解:

$2^5\times 3^2\times {\mathrm{29}}^1\times {\mathrm{2539}}^1$

素因数の和:2584

約数の個数: 72

約数和(自身を含む): 62407800

約数和(自身を除く): 41202072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 32, 36, 48, 58, 72, 87, 96, 116, 144, 174, 232, 261, 288, 348, 464, 522, 696, 928, 1044, 1392, 2088, 2539, 2784, 4176, 5078, 7617, 8352, 10156, 15234, 20312, 22851, 30468, 40624, 45702, 60936, 73631, 81248, 91404, 121872, 147262, 182808, 220893, 243744, 294524, 365616, 441786, 589048, 662679, 731232, 883572, 1178096, 1325358, 1767144, 2356192, 2650716, 3534288, 5301432, 7068576, 10602864, 21205728]

約数ペア:

[(1, 21205728), (2, 10602864), (3, 7068576), (4, 5301432), (6, 3534288), (8, 2650716), (9, 2356192), (12, 1767144), (16, 1325358), (18, 1178096), (24, 883572), (29, 731232), (32, 662679), (36, 589048), (48, 441786), (58, 365616), (72, 294524), (87, 243744), (96, 220893), (116, 182808), (144, 147262), (174, 121872), (232, 91404), (261, 81248), (288, 73631), (348, 60936), (464, 45702), (522, 40624), (696, 30468), (928, 22851), (1044, 20312), (1392, 15234), (2088, 10156), (2539, 8352), (2784, 7617), (4176, 5078)]