20011725

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1331

約数の個数: 48

約数和(自身を含む): 38390400

約数和(自身を除く): 18378675

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1289, 1725, 3105, 3867, 5175, 6445, 11601, 15525, 19335, 29647, 32225, 34803, 58005, 88941, 96675, 148235, 174015, 266823, 290025, 444705, 741175, 800469, 870075, 1334115, 2223525, 4002345, 6670575, 20011725]

約数ペア:

[(1, 20011725), (3, 6670575), (5, 4002345), (9, 2223525), (15, 1334115), (23, 870075), (25, 800469), (27, 741175), (45, 444705), (69, 290025), (75, 266823), (115, 174015), (135, 148235), (207, 96675), (225, 88941), (345, 58005), (575, 34803), (621, 32225), (675, 29647), (1035, 19335), (1289, 15525), (1725, 11601), (3105, 6445), (3867, 5175)]