21495520

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3631}}^1$

素因数の和:3683

約数の個数: 48

約数和(自身を含む): 52170048

約数和(自身を除く): 30674528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3631, 5920, 7262, 14524, 18155, 29048, 36310, 58096, 72620, 116192, 134347, 145240, 268694, 290480, 537388, 580960, 671735, 1074776, 1343470, 2149552, 2686940, 4299104, 5373880, 10747760, 21495520]

約数ペア:

[(1, 21495520), (2, 10747760), (4, 5373880), (5, 4299104), (8, 2686940), (10, 2149552), (16, 1343470), (20, 1074776), (32, 671735), (37, 580960), (40, 537388), (74, 290480), (80, 268694), (148, 145240), (160, 134347), (185, 116192), (296, 72620), (370, 58096), (592, 36310), (740, 29048), (1184, 18155), (1480, 14524), (2960, 7262), (3631, 5920)]