213481775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{2617}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 286325424

約数和(自身を除く): 72843649

約数列:

[1, 5, 13, 25, 65, 251, 325, 1255, 2617, 3263, 6275, 13085, 16315, 34021, 65425, 81575, 170105, 656867, 850525, 3284335, 8539271, 16421675, 42696355, 213481775]

約数ペア:

[(1, 213481775), (5, 42696355), (13, 16421675), (25, 8539271), (65, 3284335), (251, 850525), (325, 656867), (1255, 170105), (2617, 81575), (3263, 65425), (6275, 34021), (13085, 16315)]