19181890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 43110144

約数和(自身を除く): 23928254

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 107, 130, 182, 197, 214, 394, 455, 535, 749, 910, 985, 1070, 1379, 1391, 1498, 1970, 2561, 2758, 2782, 3745, 5122, 6895, 6955, 7490, 9737, 12805, 13790, 13910, 17927, 19474, 21079, 25610, 35854, 42158, 48685, 89635, 97370, 105395, 147553, 179270, 210790, 274027, 295106, 548054, 737765, 1370135, 1475530, 1918189, 2740270, 3836378, 9590945, 19181890]

約数ペア:

[(1, 19181890), (2, 9590945), (5, 3836378), (7, 2740270), (10, 1918189), (13, 1475530), (14, 1370135), (26, 737765), (35, 548054), (65, 295106), (70, 274027), (91, 210790), (107, 179270), (130, 147553), (182, 105395), (197, 97370), (214, 89635), (394, 48685), (455, 42158), (535, 35854), (749, 25610), (910, 21079), (985, 19474), (1070, 17927), (1379, 13910), (1391, 13790), (1498, 12805), (1970, 9737), (2561, 7490), (2758, 6955), (2782, 6895), (3745, 5122)]