21891597

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 17299443

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 53, 89, 91, 119, 159, 221, 267, 273, 357, 371, 623, 663, 689, 901, 1113, 1157, 1513, 1547, 1869, 2067, 2703, 3471, 4539, 4641, 4717, 4823, 6307, 8099, 10591, 11713, 14151, 14469, 18921, 19669, 24297, 31773, 33019, 35139, 59007, 61321, 80189, 81991, 99057, 137683, 183963, 240567, 245973, 413049, 429247, 561323, 1042457, 1287741, 1683969, 3127371, 7297199, 21891597]

約数ペア:

[(1, 21891597), (3, 7297199), (7, 3127371), (13, 1683969), (17, 1287741), (21, 1042457), (39, 561323), (51, 429247), (53, 413049), (89, 245973), (91, 240567), (119, 183963), (159, 137683), (221, 99057), (267, 81991), (273, 80189), (357, 61321), (371, 59007), (623, 35139), (663, 33019), (689, 31773), (901, 24297), (1113, 19669), (1157, 18921), (1513, 14469), (1547, 14151), (1869, 11713), (2067, 10591), (2703, 8099), (3471, 6307), (4539, 4823), (4641, 4717)]