21306525

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{983}}^1$

素因数の和:1030

約数の個数: 36

約数和(自身を含む): 37458912

約数和(自身を除く): 16152387

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 289, 425, 867, 983, 1275, 1445, 2949, 4335, 4915, 7225, 14745, 16711, 21675, 24575, 50133, 73725, 83555, 250665, 284087, 417775, 852261, 1253325, 1420435, 4261305, 7102175, 21306525]

約数ペア:

[(1, 21306525), (3, 7102175), (5, 4261305), (15, 1420435), (17, 1253325), (25, 852261), (51, 417775), (75, 284087), (85, 250665), (255, 83555), (289, 73725), (425, 50133), (867, 24575), (983, 21675), (1275, 16711), (1445, 14745), (2949, 7225), (4335, 4915)]