21481208.000000000

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{26053}}^1$

素因数の和:26089

約数の個数: 72

約数和(自身を含む): 379346240

約数和(自身を除く): 254604476

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4788, 26053, 52106, 78159, 104212, 156318, 182371, 234477, 312636, 364742, 468954, 495007, 547113, 729484, 937908, 990014, 1094226, 1485021, 1641339, 1980028, 2188452, 2970042, 3282678, 3465049, 4455063, 5940084, 6565356, 6930098, 8910126, 10395147, 13860196, 17820252, 20790294, 31185441, 41580588, 62370882, 124741764]

約数ペア:

[(1, 124741764), (2, 62370882), (3, 41580588), (4, 31185441), (6, 20790294), (7, 17820252), (9, 13860196), (12, 10395147), (14, 8910126), (18, 6930098), (19, 6565356), (21, 5940084), (28, 4455063), (36, 3465049), (38, 3282678), (42, 2970042), (57, 2188452), (63, 1980028), (76, 1641339), (84, 1485021), (114, 1094226), (126, 990014), (133, 937908), (171, 729484), (228, 547113), (252, 495007), (266, 468954), (342, 364742), (399, 312636), (532, 234477), (684, 182371), (798, 156318), (1197, 104212), (1596, 78159), (2394, 52106), (4788, 26053)]