21643744

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 44770320

約数和(自身を除く): 23126576

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 83, 116, 166, 232, 281, 332, 464, 562, 664, 928, 1124, 1328, 2248, 2407, 2656, 4496, 4814, 8149, 8992, 9628, 16298, 19256, 23323, 32596, 38512, 46646, 65192, 77024, 93292, 130384, 186584, 260768, 373168, 676367, 746336, 1352734, 2705468, 5410936, 10821872, 21643744]

約数ペア:

[(1, 21643744), (2, 10821872), (4, 5410936), (8, 2705468), (16, 1352734), (29, 746336), (32, 676367), (58, 373168), (83, 260768), (116, 186584), (166, 130384), (232, 93292), (281, 77024), (332, 65192), (464, 46646), (562, 38512), (664, 32596), (928, 23323), (1124, 19256), (1328, 16298), (2248, 9628), (2407, 8992), (2656, 8149), (4496, 4814)]