21971072

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{439}}^1$

素因数の和:493

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 26499328

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 64, 68, 92, 128, 136, 184, 272, 368, 391, 439, 544, 736, 782, 878, 1088, 1472, 1564, 1756, 2176, 2944, 3128, 3512, 6256, 7024, 7463, 10097, 12512, 14048, 14926, 20194, 25024, 28096, 29852, 40388, 50048, 56192, 59704, 80776, 119408, 161552, 171649, 238816, 323104, 343298, 477632, 646208, 686596, 955264, 1292416, 1373192, 2746384, 5492768, 10985536, 21971072]

約数ペア:

[(1, 21971072), (2, 10985536), (4, 5492768), (8, 2746384), (16, 1373192), (17, 1292416), (23, 955264), (32, 686596), (34, 646208), (46, 477632), (64, 343298), (68, 323104), (92, 238816), (128, 171649), (136, 161552), (184, 119408), (272, 80776), (368, 59704), (391, 56192), (439, 50048), (544, 40388), (736, 29852), (782, 28096), (878, 25024), (1088, 20194), (1472, 14926), (1564, 14048), (1756, 12512), (2176, 10097), (2944, 7463), (3128, 7024), (3512, 6256)]