21298178

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 38610432

約数和(自身を除く): 17312254

約数列:

[1, 2, 11, 17, 22, 31, 34, 62, 121, 167, 187, 242, 334, 341, 374, 527, 682, 1054, 1837, 2057, 2839, 3674, 3751, 4114, 5177, 5678, 5797, 7502, 10354, 11594, 20207, 31229, 40414, 56947, 62458, 63767, 88009, 113894, 127534, 176018, 343519, 626417, 687038, 968099, 1252834, 1936198, 10649089, 21298178]

約数ペア:

[(1, 21298178), (2, 10649089), (11, 1936198), (17, 1252834), (22, 968099), (31, 687038), (34, 626417), (62, 343519), (121, 176018), (167, 127534), (187, 113894), (242, 88009), (334, 63767), (341, 62458), (374, 56947), (527, 40414), (682, 31229), (1054, 20207), (1837, 11594), (2057, 10354), (2839, 7502), (3674, 5797), (3751, 5678), (4114, 5177)]