19867120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2729}}^1$

素因数の和:2762

約数の個数: 80

約数和(自身を含む): 56871360

約数和(自身を除く): 37004240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2729, 3640, 5458, 7280, 10916, 13645, 19103, 21832, 27290, 35477, 38206, 43664, 54580, 70954, 76412, 95515, 109160, 141908, 152824, 177385, 191030, 218320, 248339, 283816, 305648, 354770, 382060, 496678, 567632, 709540, 764120, 993356, 1241695, 1419080, 1528240, 1986712, 2483390, 2838160, 3973424, 4966780, 9933560, 19867120]

約数ペア:

[(1, 19867120), (2, 9933560), (4, 4966780), (5, 3973424), (7, 2838160), (8, 2483390), (10, 1986712), (13, 1528240), (14, 1419080), (16, 1241695), (20, 993356), (26, 764120), (28, 709540), (35, 567632), (40, 496678), (52, 382060), (56, 354770), (65, 305648), (70, 283816), (80, 248339), (91, 218320), (104, 191030), (112, 177385), (130, 152824), (140, 141908), (182, 109160), (208, 95515), (260, 76412), (280, 70954), (364, 54580), (455, 43664), (520, 38206), (560, 35477), (728, 27290), (910, 21832), (1040, 19103), (1456, 13645), (1820, 10916), (2729, 7280), (3640, 5458)]