21097587

素因数分解:

$3^1\times 7^4\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:161

約数の個数: 40

約数和(自身を含む): 34284240

約数和(自身を除く): 13186653

約数列:

[1, 3, 7, 21, 29, 49, 87, 101, 147, 203, 303, 343, 609, 707, 1029, 1421, 2121, 2401, 2929, 4263, 4949, 7203, 8787, 9947, 14847, 20503, 29841, 34643, 61509, 69629, 103929, 143521, 208887, 242501, 430563, 727503, 1004647, 3013941, 7032529, 21097587]

約数ペア:

[(1, 21097587), (3, 7032529), (7, 3013941), (21, 1004647), (29, 727503), (49, 430563), (87, 242501), (101, 208887), (147, 143521), (203, 103929), (303, 69629), (343, 61509), (609, 34643), (707, 29841), (1029, 20503), (1421, 14847), (2121, 9947), (2401, 8787), (2929, 7203), (4263, 4949)]