20101575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 36560160

約数和(自身を除く): 16458585

約数列:

[1, 3, 5, 13, 15, 25, 39, 53, 65, 75, 159, 195, 265, 325, 389, 689, 795, 975, 1167, 1325, 1945, 2067, 3445, 3975, 5057, 5835, 9725, 10335, 15171, 17225, 20617, 25285, 29175, 51675, 61851, 75855, 103085, 126425, 268021, 309255, 379275, 515425, 804063, 1340105, 1546275, 4020315, 6700525, 20101575]

約数ペア:

[(1, 20101575), (3, 6700525), (5, 4020315), (13, 1546275), (15, 1340105), (25, 804063), (39, 515425), (53, 379275), (65, 309255), (75, 268021), (159, 126425), (195, 103085), (265, 75855), (325, 61851), (389, 51675), (689, 29175), (795, 25285), (975, 20617), (1167, 17225), (1325, 15171), (1945, 10335), (2067, 9725), (3445, 5835), (3975, 5057)]