19771920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3923}}^1$

素因数の和:3949

約数の個数: 120

約数和(自身を含む): 75905856

約数和(自身を除く): 56133936

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3923, 5040, 7846, 11769, 15692, 19615, 23538, 27461, 31384, 35307, 39230, 47076, 54922, 58845, 62768, 70614, 78460, 82383, 94152, 109844, 117690, 137305, 141228, 156920, 164766, 176535, 188304, 219688, 235380, 247149, 274610, 282456, 313840, 329532, 353070, 411915, 439376, 470760, 494298, 549220, 564912, 659064, 706140, 823830, 941520, 988596, 1098440, 1235745, 1318128, 1412280, 1647660, 1977192, 2196880, 2471490, 2824560, 3295320, 3954384, 4942980, 6590640, 9885960, 19771920]

約数ペア:

[(1, 19771920), (2, 9885960), (3, 6590640), (4, 4942980), (5, 3954384), (6, 3295320), (7, 2824560), (8, 2471490), (9, 2196880), (10, 1977192), (12, 1647660), (14, 1412280), (15, 1318128), (16, 1235745), (18, 1098440), (20, 988596), (21, 941520), (24, 823830), (28, 706140), (30, 659064), (35, 564912), (36, 549220), (40, 494298), (42, 470760), (45, 439376), (48, 411915), (56, 353070), (60, 329532), (63, 313840), (70, 282456), (72, 274610), (80, 247149), (84, 235380), (90, 219688), (105, 188304), (112, 176535), (120, 164766), (126, 156920), (140, 141228), (144, 137305), (168, 117690), (180, 109844), (210, 94152), (240, 82383), (252, 78460), (280, 70614), (315, 62768), (336, 58845), (360, 54922), (420, 47076), (504, 39230), (560, 35307), (630, 31384), (720, 27461), (840, 23538), (1008, 19615), (1260, 15692), (1680, 11769), (2520, 7846), (3923, 5040)]