21421952

素因数分解:

$2^7\times {\mathrm{29}}^2\times {\mathrm{199}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 44421000

約数和(自身を除く): 22999048

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 116, 128, 199, 232, 398, 464, 796, 841, 928, 1592, 1682, 1856, 3184, 3364, 3712, 5771, 6368, 6728, 11542, 12736, 13456, 23084, 25472, 26912, 46168, 53824, 92336, 107648, 167359, 184672, 334718, 369344, 669436, 738688, 1338872, 2677744, 5355488, 10710976, 21421952]

約数ペア:

[(1, 21421952), (2, 10710976), (4, 5355488), (8, 2677744), (16, 1338872), (29, 738688), (32, 669436), (58, 369344), (64, 334718), (116, 184672), (128, 167359), (199, 107648), (232, 92336), (398, 53824), (464, 46168), (796, 26912), (841, 25472), (928, 23084), (1592, 13456), (1682, 12736), (1856, 11542), (3184, 6728), (3364, 6368), (3712, 5771)]