18674336

素因数分解:

$2^5\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19428064

約数列:

[1, 2, 4, 8, 16, 32, 79, 83, 89, 158, 166, 178, 316, 332, 356, 632, 664, 712, 1264, 1328, 1424, 2528, 2656, 2848, 6557, 7031, 7387, 13114, 14062, 14774, 26228, 28124, 29548, 52456, 56248, 59096, 104912, 112496, 118192, 209824, 224992, 236384, 583573, 1167146, 2334292, 4668584, 9337168, 18674336]

約数ペア:

[(1, 18674336), (2, 9337168), (4, 4668584), (8, 2334292), (16, 1167146), (32, 583573), (79, 236384), (83, 224992), (89, 209824), (158, 118192), (166, 112496), (178, 104912), (316, 59096), (332, 56248), (356, 52456), (632, 29548), (664, 28124), (712, 26228), (1264, 14774), (1328, 14062), (1424, 13114), (2528, 7387), (2656, 7031), (2848, 6557)]