21897656

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 26486344

約数列:

[1, 2, 4, 8, 11, 22, 23, 31, 44, 46, 62, 88, 92, 124, 184, 248, 253, 341, 349, 506, 682, 698, 713, 1012, 1364, 1396, 1426, 2024, 2728, 2792, 2852, 3839, 5704, 7678, 7843, 8027, 10819, 15356, 15686, 16054, 21638, 30712, 31372, 32108, 43276, 62744, 64216, 86552, 88297, 119009, 176594, 238018, 248837, 353188, 476036, 497674, 706376, 952072, 995348, 1990696, 2737207, 5474414, 10948828, 21897656]

約数ペア:

[(1, 21897656), (2, 10948828), (4, 5474414), (8, 2737207), (11, 1990696), (22, 995348), (23, 952072), (31, 706376), (44, 497674), (46, 476036), (62, 353188), (88, 248837), (92, 238018), (124, 176594), (184, 119009), (248, 88297), (253, 86552), (341, 64216), (349, 62744), (506, 43276), (682, 32108), (698, 31372), (713, 30712), (1012, 21638), (1364, 16054), (1396, 15686), (1426, 15356), (2024, 10819), (2728, 8027), (2792, 7843), (2852, 7678), (3839, 5704)]