20771478

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1409}}^1$

素因数の和:1443

約数の個数: 80

約数和(自身を含む): 57324960

約数和(自身を除く): 36553482

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 81, 91, 117, 126, 162, 182, 189, 234, 273, 351, 378, 546, 567, 702, 819, 1053, 1134, 1409, 1638, 2106, 2457, 2818, 4227, 4914, 7371, 8454, 9863, 12681, 14742, 18317, 19726, 25362, 29589, 36634, 38043, 54951, 59178, 76086, 88767, 109902, 114129, 128219, 164853, 177534, 228258, 256438, 266301, 329706, 384657, 494559, 532602, 769314, 798903, 989118, 1153971, 1483677, 1597806, 2307942, 2967354, 3461913, 6923826, 10385739, 20771478]

約数ペア:

[(1, 20771478), (2, 10385739), (3, 6923826), (6, 3461913), (7, 2967354), (9, 2307942), (13, 1597806), (14, 1483677), (18, 1153971), (21, 989118), (26, 798903), (27, 769314), (39, 532602), (42, 494559), (54, 384657), (63, 329706), (78, 266301), (81, 256438), (91, 228258), (117, 177534), (126, 164853), (162, 128219), (182, 114129), (189, 109902), (234, 88767), (273, 76086), (351, 59178), (378, 54951), (546, 38043), (567, 36634), (702, 29589), (819, 25362), (1053, 19726), (1134, 18317), (1409, 14742), (1638, 12681), (2106, 9863), (2457, 8454), (2818, 7371), (4227, 4914)]