19896784

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 40298760

約数和(自身を除く): 20401976

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 137, 232, 274, 313, 464, 548, 626, 1096, 1252, 2192, 2504, 3973, 5008, 7946, 9077, 15892, 18154, 31784, 36308, 42881, 63568, 72616, 85762, 145232, 171524, 343048, 686096, 1243549, 2487098, 4974196, 9948392, 19896784]

約数ペア:

[(1, 19896784), (2, 9948392), (4, 4974196), (8, 2487098), (16, 1243549), (29, 686096), (58, 343048), (116, 171524), (137, 145232), (232, 85762), (274, 72616), (313, 63568), (464, 42881), (548, 36308), (626, 31784), (1096, 18154), (1252, 15892), (2192, 9077), (2504, 7946), (3973, 5008)]