18420075

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{941}}^1$

素因数の和:989

約数の個数: 48

約数和(自身を含む): 35042400

約数和(自身を除く): 16622325

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 941, 1305, 2175, 2823, 3915, 4705, 6525, 8469, 14115, 19575, 23525, 25407, 27289, 42345, 70575, 81867, 127035, 136445, 211725, 245601, 409335, 635175, 682225, 736803, 1228005, 2046675, 3684015, 6140025, 18420075]

約数ペア:

[(1, 18420075), (3, 6140025), (5, 3684015), (9, 2046675), (15, 1228005), (25, 736803), (27, 682225), (29, 635175), (45, 409335), (75, 245601), (87, 211725), (135, 136445), (145, 127035), (225, 81867), (261, 70575), (435, 42345), (675, 27289), (725, 25407), (783, 23525), (941, 19575), (1305, 14115), (2175, 8469), (2823, 6525), (3915, 4705)]