18990525

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 33390720

約数和(自身を除く): 14400195

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 101, 109, 115, 303, 327, 345, 505, 545, 575, 1515, 1635, 1725, 2323, 2507, 2525, 2725, 6969, 7521, 7575, 8175, 11009, 11615, 12535, 33027, 34845, 37605, 55045, 58075, 62675, 165135, 174225, 188025, 253207, 275225, 759621, 825675, 1266035, 3798105, 6330175, 18990525]

約数ペア:

[(1, 18990525), (3, 6330175), (5, 3798105), (15, 1266035), (23, 825675), (25, 759621), (69, 275225), (75, 253207), (101, 188025), (109, 174225), (115, 165135), (303, 62675), (327, 58075), (345, 55045), (505, 37605), (545, 34845), (575, 33027), (1515, 12535), (1635, 11615), (1725, 11009), (2323, 8175), (2507, 7575), (2525, 7521), (2725, 6969)]