19988228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20231}}^1$

素因数の和:20267

約数の個数: 24

約数和(自身を含む): 39654720

約数和(自身を除く): 19666492

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20231, 40462, 80924, 263003, 384389, 526006, 768778, 1052012, 1537556, 4997057, 9994114, 19988228]

約数ペア:

[(1, 19988228), (2, 9994114), (4, 4997057), (13, 1537556), (19, 1052012), (26, 768778), (38, 526006), (52, 384389), (76, 263003), (247, 80924), (494, 40462), (988, 20231)]