21213804

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 53766720

約数和(自身を除く): 32552916

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 59, 76, 83, 114, 118, 166, 177, 228, 236, 249, 332, 354, 361, 498, 708, 722, 996, 1083, 1121, 1444, 1577, 2166, 2242, 3154, 3363, 4332, 4484, 4731, 4897, 6308, 6726, 9462, 9794, 13452, 14691, 18924, 19588, 21299, 29382, 29963, 42598, 58764, 59926, 63897, 85196, 89889, 93043, 119852, 127794, 179778, 186086, 255588, 279129, 359556, 372172, 558258, 1116516, 1767817, 3535634, 5303451, 7071268, 10606902, 21213804]

約数ペア:

[(1, 21213804), (2, 10606902), (3, 7071268), (4, 5303451), (6, 3535634), (12, 1767817), (19, 1116516), (38, 558258), (57, 372172), (59, 359556), (76, 279129), (83, 255588), (114, 186086), (118, 179778), (166, 127794), (177, 119852), (228, 93043), (236, 89889), (249, 85196), (332, 63897), (354, 59926), (361, 58764), (498, 42598), (708, 29963), (722, 29382), (996, 21299), (1083, 19588), (1121, 18924), (1444, 14691), (1577, 13452), (2166, 9794), (2242, 9462), (3154, 6726), (3363, 6308), (4332, 4897), (4484, 4731)]