19991508

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 49182336

約数和(自身を除く): 29190828

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 113, 138, 226, 276, 339, 452, 641, 678, 1282, 1356, 1923, 2564, 2599, 3846, 5198, 7692, 7797, 10396, 14743, 15594, 29486, 31188, 44229, 58972, 72433, 88458, 144866, 176916, 217299, 289732, 434598, 869196, 1665959, 3331918, 4997877, 6663836, 9995754, 19991508]

約数ペア:

[(1, 19991508), (2, 9995754), (3, 6663836), (4, 4997877), (6, 3331918), (12, 1665959), (23, 869196), (46, 434598), (69, 289732), (92, 217299), (113, 176916), (138, 144866), (226, 88458), (276, 72433), (339, 58972), (452, 44229), (641, 31188), (678, 29486), (1282, 15594), (1356, 14743), (1923, 10396), (2564, 7797), (2599, 7692), (3846, 5198)]