21395888

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1097}}^1$

素因数の和:1181

約数の個数: 40

約数和(自身を含む): 44113248

約数和(自身を除く): 22717360

約数列:

[1, 2, 4, 8, 16, 23, 46, 53, 92, 106, 184, 212, 368, 424, 848, 1097, 1219, 2194, 2438, 4388, 4876, 8776, 9752, 17552, 19504, 25231, 50462, 58141, 100924, 116282, 201848, 232564, 403696, 465128, 930256, 1337243, 2674486, 5348972, 10697944, 21395888]

約数ペア:

[(1, 21395888), (2, 10697944), (4, 5348972), (8, 2674486), (16, 1337243), (23, 930256), (46, 465128), (53, 403696), (92, 232564), (106, 201848), (184, 116282), (212, 100924), (368, 58141), (424, 50462), (848, 25231), (1097, 19504), (1219, 17552), (2194, 9752), (2438, 8776), (4388, 4876)]