21060018

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{463}}^1$

素因数の和:516

約数の個数: 72

約数和(自身を含む): 55156608

約数和(自身を除く): 34096590

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 38, 42, 57, 63, 114, 126, 133, 171, 266, 342, 361, 399, 463, 722, 798, 926, 1083, 1197, 1389, 2166, 2394, 2527, 2778, 3241, 3249, 4167, 5054, 6482, 6498, 7581, 8334, 8797, 9723, 15162, 17594, 19446, 22743, 26391, 29169, 45486, 52782, 58338, 61579, 79173, 123158, 158346, 167143, 184737, 334286, 369474, 501429, 554211, 1002858, 1108422, 1170001, 1504287, 2340002, 3008574, 3510003, 7020006, 10530009, 21060018]

約数ペア:

[(1, 21060018), (2, 10530009), (3, 7020006), (6, 3510003), (7, 3008574), (9, 2340002), (14, 1504287), (18, 1170001), (19, 1108422), (21, 1002858), (38, 554211), (42, 501429), (57, 369474), (63, 334286), (114, 184737), (126, 167143), (133, 158346), (171, 123158), (266, 79173), (342, 61579), (361, 58338), (399, 52782), (463, 45486), (722, 29169), (798, 26391), (926, 22743), (1083, 19446), (1197, 17594), (1389, 15162), (2166, 9723), (2394, 8797), (2527, 8334), (2778, 7581), (3241, 6498), (3249, 6482), (4167, 5054)]