21918960

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4349}}^1$

素因数の和:4375

約数の個数: 120

約数和(自身を含む): 84146400

約数和(自身を除く): 62227440

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, 4349, 5040, 8698, 13047, 17396, 21745, 26094, 30443, 34792, 39141, 43490, 52188, 60886, 65235, 69584, 78282, 86980, 91329, 104376, 121772, 130470, 152215, 156564, 173960, 182658, 195705, 208752, 243544, 260940, 273987, 304430, 313128, 347920, 365316, 391410, 456645, 487088, 521880, 547974, 608860, 626256, 730632, 782820, 913290, 1043760, 1095948, 1217720, 1369935, 1461264, 1565640, 1826580, 2191896, 2435440, 2739870, 3131280, 3653160, 4383792, 5479740, 7306320, 10959480, 21918960]

約数ペア:

[(1, 21918960), (2, 10959480), (3, 7306320), (4, 5479740), (5, 4383792), (6, 3653160), (7, 3131280), (8, 2739870), (9, 2435440), (10, 2191896), (12, 1826580), (14, 1565640), (15, 1461264), (16, 1369935), (18, 1217720), (20, 1095948), (21, 1043760), (24, 913290), (28, 782820), (30, 730632), (35, 626256), (36, 608860), (40, 547974), (42, 521880), (45, 487088), (48, 456645), (56, 391410), (60, 365316), (63, 347920), (70, 313128), (72, 304430), (80, 273987), (84, 260940), (90, 243544), (105, 208752), (112, 195705), (120, 182658), (126, 173960), (140, 156564), (144, 152215), (168, 130470), (180, 121772), (210, 104376), (240, 91329), (252, 86980), (280, 78282), (315, 69584), (336, 65235), (360, 60886), (420, 52188), (504, 43490), (560, 39141), (630, 34792), (720, 30443), (840, 26094), (1008, 21745), (1260, 17396), (1680, 13047), (2520, 8698), (4349, 5040)]