21813525

素因数分解:

$3^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{1447}}^1$

素因数の和:1530

約数の個数: 36

約数和(自身を含む): 39680992

約数和(自身を除く): 17867467

約数列:

[1, 3, 5, 9, 15, 25, 45, 67, 75, 201, 225, 335, 603, 1005, 1447, 1675, 3015, 4341, 5025, 7235, 13023, 15075, 21705, 36175, 65115, 96949, 108525, 290847, 325575, 484745, 872541, 1454235, 2423725, 4362705, 7271175, 21813525]

約数ペア:

[(1, 21813525), (3, 7271175), (5, 4362705), (9, 2423725), (15, 1454235), (25, 872541), (45, 484745), (67, 325575), (75, 290847), (201, 108525), (225, 96949), (335, 65115), (603, 36175), (1005, 21705), (1447, 15075), (1675, 13023), (3015, 7235), (4341, 5025)]